Chapter Text
The Emergency Department felt decidedly different in the middle of the night. Or perhaps it was morning - whatever 4am counted as.
Trinity Santos stood at the central nursing station, reviewing labs, trying to put her finger on what had changed. The layout was the same, with trauma rooms to the left, acute care rooms wrapping around the perimeter, the meds dispensary humming in the corner. The fluorescent lights were just as unforgiving. The smell of antiseptic and stale air was identical.
But the vibes were definitely different.
Day shift had a frantic energy, a constant churn of patients and attendings and consultants moving through like a tide. Night shift felt quieter than Trinity had anticipated. It was the kind of quiet that alerted you to every sound - the distant wail of an incoming ambulance, the steady beep of monitors, someone's laboured breathing in bed 7.
Trinity had worked nights before– everyone did during residency– but they were scattered shifts that wrecked your sleep schedule for days afterward. But this was different. This was her new normal, a permanent shift to the night shift.
She'd made the request three weeks ago, sitting in a random office with Robby, explaining in careful, professional terms that she thought the night shift would be a better fit for her learning style. That she wanted more autonomy, more hands-on experience with critical patients. That the night attendings had a teaching style she responded to.
All technically true, but usefully avoiding the “real” reason. Mostly, it was that day shift had become somewhere she no longer wanted to be. Dr. Langdon's return after rehab had created a tension in the department that she didn't quite know how to navigate. Not to mention running into Yolanda Garcia three times a shift - in the hallway, at the nursing station, during traumas - was beginning to exhaust her more than the work itself.
Robby had looked at her for a long moment, his eyes narrowed, and then he'd signed the transfer paperwork without asking questions. She was grateful not to have to answer.
So here she was. Her first official night as a permanent member of the night shift team. She was acutely aware of the nickname they affectionately used between themselves - but she wasn’t quite ready to call herself a ‘night crawler’ just yet.
"Santos."
Trinity looked up. Dr. Jack Abbott stood on the other side of the station, arms crossed, expression neutral.
She'd worked with him before - during the Pittfest shooting on her very first day as an intern. Trinity had been running on pure adrenaline, starting a REBOA when she had absolutely no business to, Abbott arriving just as she'd finished. He hadn't said much, just enough to let her know she'd crossed a line, but that she'd made the right call.
They'd crossed paths occasionally since then - shift changes, the rare night shift she'd picked up - but now she was officially part of his team.
"Yeah?" Trinity said.
"You good with the chest pain in 4? EKG's clean, troponin's negative at four hours. I'm thinking GERD, but she's got some atypical features."
Trinity pulled up the chart. Sixty-two-year-old woman, substernal chest pressure radiating to her jaw, worse with exertion. Classic presentation, except her pain had started while she was sitting watching TV. No diaphoresis, no nausea. Vitals stable.
"Her stress test from last year was normal," Trinity said, scrolling through the history. "But she's got diabetes and hypertension. I'd feel better with a second troponin at six hours before we send her home."
Abbott nodded. "Good call. Order it."
He walked away without further comment, which Trinity was learning was his version of approval.
It was a relief, honestly. After months of navigating whatever was going on with Robby - and Al-Hashimi's well-meaning but exhausting check-ins, Abbott's straightforward approach felt like solid ground.
Trinity put in the order and moved on to the next chart. A laceration repair in Room 9, a possible appendicitis in 11, a drunk college kid sleeping it off in 14. Standard ED work, the reliable constants that helped Trinity feel a little more in place despite the change the night shift brought to the ED.
"Santos, you want this coffee?"
Trinity turned. Dr. John Shen stood behind her, holding out a large Dunkin' iced coffee like an offering.
"I already have coffee," Trinity said, gesturing to her own cup, which was filled with the hours old filtered coffee from the break room, and admittedly was quite disgusting if Trinity was being truthful.
"Yeah, but this is good coffee." Shen took a long pull from his own identical cup. "Hospital coffee is basically battery acid. I'm trying to save your life here."
"I think I'll survive."
"Your funeral." Shen shrugged and set the extra cup on the counter. "It's there if you change your mind. I always order two because I can never remember if I've already had one, and then I end up with, like, four cups by the end of the shift, and Abbott gives me shit about it, but honestly, the man drinks straight black coffee like a psychopath, so I don't think he gets to judge."
Trinity blinked. "Do you breathe between sentences?"
"Not if I can help it." Shen grinned. "How's your first official night going? You surviving the transition?"
"So far."
"Good. Night shift is better anyway. Less admin bullshit, and the patients are either really sick or really drunk, so at least it's interesting." Shen's pager then went off, and he glanced at it. "Okay, I've got a psych patient in 6 who's threatening to leave AMA. You good here?"
"I'm good."
"Cool. Drink the coffee. It'll change your life."
He disappeared down the hallway, and Trinity looked at the iced coffee sitting on the counter. She picked it up, took a sip, and had to admit - it was significantly better than the swill she'd been drinking.
She was halfway through the cup when Parker Ellis appeared at her elbow.
"Trauma incoming," Ellis said. "MVC, two patients. ETA three minutes."
Trinity's stomach turned, the way it always did before a trauma, though she wasn’t sure whether it was down to excitement or fear at this point. She'd done plenty of them during her two years, but the adrenaline spike never really went away.
"What do we know?" she asked, already moving toward the trauma bay.
"Driver and passenger, single-vehicle rollover. Driver's a twenty-eight-year-old male, GCS 10 at the scene, hypotensive. Passenger's a thirty-two-year-old female, alert and oriented, complaining of chest and abdominal pain."
Ellis was a fourth-year resident, so her response was confident in the way that came from having done this a thousand times.
They reached Trauma Bay 1 just as the first ambulance backed into the bay. The doors opened, and the paramedics wheeled in the stretcher.
"Twenty-eight-year-old male, unrestrained driver, rollover MVC," the lead paramedic said, rattling off vitals as they transferred the patient to the hospital bed. "GCS was 10 at the scene, now 12. BP's 90 over 60, heart rate 120. Breath sounds equal bilaterally. Pelvis is stable. We've got two large-bore IVs running wide open."
Trinity moved to the patient's side, her hands already working.
"Breath sounds are good," she said, stethoscope pressed to the patient's chest. "Heart rate's tachy but regular. Abdomen's rigid - possible intraperitoneal bleed."
"Let's get a FAST exam," Abbott said from the doorway. He'd appeared without her noticing, the way he always did. "And call surgery."
Trinity nodded, already reaching for the ultrasound probe. She ran it over the patient's abdomen, looking for free fluid in the standard views. Trinity paused - there it was, a dark stripe in Morrison's pouch. Blood.
"Positive FAST," she said. "Free fluid in the right upper quadrant."
"He's going to the OR," Abbott said. "Page surgery. Ellis, take the passenger in Bay 2."
Ellis nodded and disappeared. Trinity grabbed the phone, her heart rate elevated but her hands steady.
She paged trauma surgery, gave a concise handover, and by the time she hung up the massive transfusion protocol was already underway.
Abbott appeared at her shoulder. "Good exam. Surgery coming down?"
"They'll be here in five."
"Good." Abbott's gaze flicked to the monitor, then back to the patient. "Keep him stable until they get here."
Trinity focused on the patient, checking his airway again, adjusting the IV fluids, keeping one eye on the monitor. His pressure was holding steady at 90 systolic - not great, but not crashing either.
The trauma bay doors swung open a few minutes later, and the surgery team arrived - the resident Trinity had spoken to on the phone, plus the attending surgeon. They moved efficiently, taking reports, examining the patient, making the call to head straight to the OR.
Trinity stepped back, letting them work. Her part was done. She'd stabilized the patient, made the right calls, and handed him off to the people who would fix what needed to be fixed.
Ellis reappeared from Bay 2. "Passenger's stable. Few broken ribs, no internal bleeding. Admitting her for observation."
"Good," Trinity said.
They walked back to the nursing station together, and Ellis glanced at her. "You did well in there. You've got good instincts. Just need more reps."
Trinity felt a flush of pride, but quickly pushed the feeling down before it became to apparent to the colleagues around her.
The rest of the shift passed in a blur of patients and orders and the strange, suspended - time feeling of working through the night. A diabetic in DKA who needed an insulin drip. A kid with a febrile seizure whose parents were terrified but who was already back to normal by the time Trinity examined him. An elderly woman with a UTI and altered mental status who kept trying to pull out her IV.
By the time 7 a.m. rolled around, Trinity's feet ached and her brain felt like it was moving through syrup, but she'd made it.
She was finishing her last chart when Shen appeared beside her, holding yet another iced coffee.
"Survived your first night," he said. "Congrats. You're officially one of us now."
"Does that come with benefits?"
"You get to see the sunrise on your drive home and feel like a vampire returning to your coffin. It's very romantic."
Trinity snorted. "Can't wait."
Abbott walked past, paused, and looked at her. "Nice work tonight, Santos. See you tomorrow."
"Thanks," Trinity said.
She watched him go, then gathered her things from the lockers and headed for the exit. The morning light was just starting to creep over the horizon. She pulled out her phone and saw a text from Dennis.
Dennis: how was the first night on the dark side?
Trinity typed back as she walked to her car.
Trinity: survived. trauma case went well.
Dennis: nice. i'm making breakfast if you want some before you pass out
Trinity: you're a saint, Huckleberry.
She drove home beneath a pale sunrise.
For the first time in months, she wasn't dreading tomorrow's shift. Trinity couldn’t help but feel she had definitely made the right decision.
---
Trinity was in the middle of suturing a lac repair on a guy who'd put his hand through a window ("I swear I thought it was open") when Parker Ellis appeared in the doorway.
"You doing okay in here?" Ellis asked.
"Yeah, almost done." Trinity tied off the last stitch and inspected her work. Clean, even spacing, no tension on the wound edges. Not bad.
Ellis stepped closer, glanced at the repair. "You're getting faster."
"Thanks." Trinity stripped off her gloves and tossed them in the trash. "You need me for something?"
"Possible appy in 11. Twenty-two-year-old guy, right lower quadrant pain, nausea, low-grade fever. I want you to take a look, tell me what you think."
Trinity followed Ellis to 11, where a young guy sat on the bed looking miserable, one hand pressed to his lower abdomen.
"This is Dr. Santos," Ellis said. "She's going to examine you."
Trinity washed her hands and pulled on fresh gloves. "Can you tell me when the pain started?"
"This morning," the guy said. "I thought it was just, like, something I ate, but it kept getting worse."
"Where exactly does it hurt?"
He pointed low on the right side of his stomach. Classic McBurney's point.
Trinity palpated his abdomen gently, watching his face. He winced when she pressed on the right side, and when she released the pressure, he flinched harder. Rebound tenderness.
"Any nausea or vomiting?"
"Yeah, I threw up a couple times."
"Fever?"
"I felt hot earlier."
Trinity stepped back, pulled off her gloves. She glanced at Ellis, who was watching her with an expectant expression.
"Appendicitis," Trinity said. "Localised right lower-quadrant pain, guarding and rebound. I’d get some imaging on him, but it’s a fairly classic presentation."
Ellis nodded. "What else are you thinking about in your differential?"
"Uh-" Trinity ran through the list in her head. "Gastroenteritis, but the localised pain and rebound make that less likely. Kidney stone, but he's not having flank pain or hematuria. Testicular torsion, but the pain's abdominal, not scrotal."
"Good. What about mesenteric adenitis?"
Trinity paused. "Possible, though he’s a little old for the typical presentation. The CT should distinguish it."
"Exactly." Ellis turned to the patient. "We're going to get some imaging to figure out what's going on. Sit tight."
They stepped out into the hallway, and Ellis looked at Trinity. "Order the CT with IV contrast. If it's appendicitis, we'll call surgery."
Trinity nodded and headed back to the nursing station to put in the orders. She was halfway through typing when Shen appeared beside her, holding two iced coffees.
"Santos, you want one?"
"Shen, it's four in the morning."
"Exactly. Prime coffee hours." He set one of the cups on the desk in front of her. "I'm trying to convert you. Abbott's a lost cause - like some kind of Depression-era grandfather who can only drink coffee if it’s objectively disgusting - but you, you have potential."
Trinity picked up the coffee and took a sip. It was cold and sweet and honestly kind of perfect. "Okay, fine. You win."
"I always do." Shen grinned. "How's the possible appy?"
"Ordering a CT now.”
”Exciting stuff. Still liking the nights?”
“Yeah, actually. It's different, but I like it."
"Well, you haven’t complained about the hours yet, which means you're either well-adjusted or in deep denial."
Trinity laughed. "Probably the second one."
"Same, honestly." Shen's pager went off, and he glanced at it. "Okay, I've got a chest pain in 8. Try not to have too much fun without me."
He disappeared down the hallway, and Trinity finished putting in the CT order. She checked on a few other patients - a kid with croup who was doing better after a dose of dexamethasone, an elderly woman with a UTI who was waiting for admission, a guy with a migraine who just needed a dark room and some IV fluids.
By the time she circled back to 11, the CT results were in. She pulled up the images on the computer, scrolling through the slices. There - a dilated, fluid-filled appendix with surrounding fat stranding. Textbook appendicitis.
She paged surgery and waited. A few minutes later, her phone buzzed.
"This is Dr. Santos in the ED. I've got a twenty-two-year-old male with acute appendicitis, CT confirmed. He's stable, no perforation on imaging."
"Got it," the voice on the other end said. "We'll send someone down to evaluate."
Trinity hung up and went to update the patient. Twenty minutes later, the surgery team arrived - a resident and an attending.
Dr. Emery Walsh.
Trinity knew her, of course. Everyone knew Walsh. Trinity had seen her around the hospital plenty of times, had worked a few cases with her during day shift crossovers, usually with half the department between them. More importantly, however, was that she was Yolanda’s best friend.
Walsh walked into the room with the kind of confidence that came from years of experience. Her dark hair pulled back, sharp eyes that took in the patient and the monitors in a single sweep.
"You're the ED resident?" Walsh asked, her tone brisk.
"Yeah. Dr. Santos."
Walsh pulled up the CT images on the computer, scrolling through them quickly. "Clean imaging. No perforation, no abscess. We'll take him up."
She turned to the patient, introduced herself, and explained the procedure.
"You'll be okay," Walsh said. "It’s a straightforward procedure. We’ll take good care of you.”
When Walsh turned back to her, the reassurance she had offered the patient was gone. Her expression was neutral.
"Appropriate workup," Walsh commented.
"Thanks," Trinity said.
Walsh nodded once, already turning to leave. The surgery resident trailed behind her, and Trinity watched them go, feeling faintly embarrassed.
She hadn’t been rude or unfriendly. Even so, Trinity couldn’t help but feel that the surgeon had already decided her opinion of her - she was Yolanda’s best friend after all, so it was not completely outside the realm of possibility that Walsh would be so… formal with her.
Trinity shook it off and moved on to the next patient.
---
It was 3 a.m., the dead zone, and Trinity was in the middle of a quiet stretch when the ambulance bay doors opened and the paramedics wheeled in a woman on a stretcher, a distraught man following in tow behind them.
"Fifty-eight-year-old female, found down by her husband," the lead paramedic said. "GCS 8, unresponsive to verbal stimuli. BP's 200 over 110, heart rate 95. Husband says she complained of a headache earlier tonight and then collapsed."
Trinity's stomach dropped. High blood pressure, sudden collapse, headache. That was a stroke until proven otherwise. The blood pressure and sudden headache made a hemorrhage frighteningly likely.
"Get her to Trauma 1," Trinity said, already moving. "She needs a CT . And page neuro."
Abbott appeared at her shoulder. "What are you thinking?"
"Hemorrhagic stroke. BP's through the roof, sudden onset, decreased GCS."
"Good. What else?"
"Protect airway, check anti-coagulant use?”
"Do it."
With her airway secured, the patient was transferred to the CT scanner within minutes. Trinity stood in the control room, watching the images populate on the screen.
There. A bright white bloom in the right hemisphere.
"Intraparenchymal hemorrhage," the radiologist said over the intercom. "Significant mass effect. Midline shift."
Trinity's heart rate kicked up. She paged neurosurgery again.
She caught herself pressing her thumbnail into the side of her finger while they waited. The neurosurgeon on call arrived ten minutes later, reviewed the imaging, and shook his head.
"Too much damage,” he said quietly. “The hemorrhage is extensive, and she’s already herniating. An operation won’t change the outcome.”
Trinity felt something uncomfortable and cold wash across her. "So we just - what? Let her die?"
"We make her comfortable," the neurosurgeon said. "We talk to the family. We don't put her through a surgery that won't help."
He walked away, and Trinity stood there, staring at the images on the screen. All that blood. And nothing she could do about it.
Abbott found her at the nursing station a few minutes later. "Neuro just spoke with the husband."
"She's going to die."
"Yeah. She is." Abbott's voice was steady, matter-of-fact. "But you gave her a chance. You did everything right in there. Sometimes that's all you can do, and it's still not enough."
Trinity nodded, swallowing hard. She knew he was right, but it didn't make it easier.
"Go take a break," Abbott said. "Fifteen minutes. Get some air."
Trinity didn't argue. She walked outside, into the cold pre - dawn air, and let herself breathe.
She thought about the woman's husband, the way he'd looked when the paramedics had wheeled her in. The way he'd held her hand, even though she couldn't respond. He'd asked, over and over, if she was going to be okay.
Trinity had told him they were doing everything they could.
She hadn't told him it wouldn't be enough.
She wasn’t sure how long she stood for, letting the cold air sting her face, but as the cold reached inside her, Trinity turned back to head inside.
---
By the end of the fourth week, Trinity felt like she was really starting to find her place.
She knew which nurses were the best at getting IVs in difficult patients. One night, when she was particularly hungry and discreetly scouring through cupboards, she discovered that Shen kept a stash of snacks in the break room. She found Abbott took his coffee breaks at exactly 4:30 a.m, his roof expeditions at 7 a.m. She learned that Ellis would let her run a case independently if she proved she could handle it. She basked in the knowledge the night shift had a dark sense of humour- one that came from spending too many hours in a place where they saw the lowest moments of many people’s lives, but a humour nonetheless.
She also knew that she was, in fact. good at this. Her judgment had become sharper, her confidence steadier. She didn't second-guess herself as much.
One night, near the end of her shift, Ellis found her as she was finishing the last of her charts.
"Abbott wants you leading the next major trauma,” Ellis said. “Assuming you’re comfortable with it.”
Trinity blinked. "He said that?"
"Don't let it get to your head. He also said you need to work on your charting speed."
Trinity laughed. "Yeah, nothing new there."
"Get them finished and then go home Santos.” Ellis walked away, and Trinity sat there for a moment before turning back to her charting. Only a month ago, she would have been counting the minutes until handoff.
She glanced at the clock and realised she had forgotten to.
Shen walked by, backpack across his shoulders as he aimed for the nearest exit, abandoning an iced coffee beside her keyboard on his way past.
This time, Trinity picked it up without asking whether it was meant for her.