GuestofaGuest
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ADVOCATUS DIABOLI BOOK 4: A SONG OF BLOOD AND BETRAYAL by GuestofaGuest
Fandoms: Harry Potter - J. K. Rowling
15 Jan 2026
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Summary
The heralding drums of resurrection have begun their beat - for both the Dark Lord and the Old Ones. As Year 4 ushes in its many dangerous and supernatural intrigues, the newly renamed Harry Black - Prince of Slytherin - must focus on shaping Salazar's House and Wizarding Britain to his Vision amidst the Triwizard Tournament. With his coterie of family, friends, and allies, Harry must strive to work within the many machinations of Fate and Destiny to stave off the Dark Lord's diabolical desire for final rebirth, and prevent the rise of another Fate-marked Prince of Slytherin.
Series
- Part 4 of ADVOCATUS DIABOLI
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ADVOCATUS DIABOLI BOOK 3: GHOSTS OF WIZARDING PAST by GuestofaGuest
Fandoms: Harry Potter - J. K. Rowling
08 May 2024
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Summary
The Dark Lord's Inner Circle - The Ghosts of Silesia - have been released from Azkaban, and the stakes are higher than ever. Now, in Year 3, Harry Potter, Lily Evans, and all their allies must race against Time Himself to overcome the Death Eater Menace that threatens to plunge their world into never-ending darkness and chaos. For if they are to survive their present and salvage their futures, they cannot fall victim to the ghosts of wizarding past.
Series
- Part 3 of ADVOCATUS DIABOLI
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ADVOCATUS DIABOLI BOOK 2: ENEMIES OF THE HEIR by GuestofaGuest
Fandoms: Harry Potter - J. K. Rowling
05 Feb 2023
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Summary
The game's afoot, and the Dark Lord has made the first play. Now, in Year 2, Harry must rely on his burgeoning cunning, intellect, allies, and somewhat Gryffindor-esque sense of bravery to defeat the many enemies that loom in the shadows.
Series
- Part 2 of ADVOCATUS DIABOLI
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ADVOCATUS DIABOLI BOOK 1: ASCENSION TO MADNESS by GuestofaGuest
Fandoms: Harry Potter - J. K. Rowling
19 Jun 2022
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Summary
Lily Evans must fight against the forces of the Darkest Magicks to ensure the survival of her sons and completion of their Destinies. An alternate Prince of Slytherin timeline, with Peter Pettigrew as the Dark Lord/Dark God.
Series
- Part 1 of ADVOCATUS DIABOLI
Recent series
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- Words:
- 894,239
- Works:
- 4
- Bookmarks:
- 149
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The Serpent Shedding its Skin by Warmaster_Abaddon
Fandoms: Harry Potter - J. K. Rowling
12 Apr 2025
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Summary
Time Travel AU: A crashed UFO induces a quantum leap in Muggle technology, leading them to wage a relentless war against magical beings. The mages face defeat as the Muggle onslaught advances. In a desperate twist, a fusion of nuclear detonations and the manipulation of time-turners shatter reality, catapulting Harry into the past. Cut off from his familiar world, Harry rolls his sleeve and gets to work on forging a new path ahead. Meanwhile, Gellert Grindelwald carves a bloody path through Europe as nation after nation falls before him.
(Harry/Fem Riddle) [Fic is complete/finished]- Language:
- English
- Words:
- 364,487
- Chapters:
- 61/61
- Comments:
- 313
- Kudos:
- 533
- Bookmarks:
- 197
- Hits:
- 55,553
Bookmarked by GuestofaGuest
19 Sep 2025
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An Undertow of Sand by Shujin1
Fandoms: Percy Jackson and the Olympians & Related Fandoms - All Media Types, Cthulhu Mythos - H. P. Lovecraft, Percy Jackson and the Olympians - Rick Riordan, The Trials of Apollo - Rick Riordan, The Kane Chronicles - Rick Riordan, The Heroes of Olympus - Rick Riordan, Ancient Greek Religion & Lore, Bloodborne (Video Game), Magnus Chase and the Gods of Asgard - Rick Riordan
03 Mar 2025
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Summary
"A half-blood child of the eldest gods, shall reach sixteen against all odds." Who decided the sons of Kronos met the criteria for eldest gods? There are older gods. Elder Gods. And They have been watching. See with the vision granted to your mind, oh Child of Prophecy. For reality is a lie. Your very existence is a flaw. An anomaly. A bend in Fate. And if Fate can bend, then it can break.
Everything is different. Nothing has changed.
Open your eyes...
Series
- Part 1 of The House the Gods Built
- Language:
- English
- Words:
- 302,143
- Chapters:
- 37/?
- Collections:
- 29
- Comments:
- 1,826
- Kudos:
- 3,055
- Bookmarks:
- 1,414
- Hits:
- 206,108
Bookmarked by GuestofaGuest
09 Mar 2025
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Holly Potter and the Midlife Crisis by Enigmaris
Fandoms: Harry Potter - J. K. Rowling, Marvel Cinematic Universe, The Avengers (Marvel Movies)
16 Sep 2020
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Summary
“The first group I sent over made the Avengers uncomfortable by thanking them constantly and asking for autographs. The next group stole things to sell on ebay. The group after that didn’t even get through the front door because Stark’s security system found something in their background that we missed. The fourth group left traumatized after cleaning out Thor’s room, apparently the god had some beheaded poultry dripping blood into a bowl in there. Then after that every group I’ve left hasn’t lasted more than three days because of some problem or another. I’m pretty sure one of those assholes has made it a game to scare my workers away.”
“I don’t think you’re supposed to call the heroes of New York assholes.”
Or, cleaning up after the Avengers involves more than just getting blood stains out of the carpet and most of them can't take the heat. Thankfully the Savior of the Wizarding has spent the last decade cleaning up after Death Eaters, so she's up to the task. Nothing, not pranks, bird corpses, or unidentified slime will keep her from cleaning up.
This Fic is now complete!
- Language:
- English
- Words:
- 392,453
- Chapters:
- 80/80
- Collections:
- 32
- Comments:
- 17,858
- Kudos:
- 29,355
- Bookmarks:
- 9,702
- Hits:
- 1,332,977
Bookmarked by GuestofaGuest
24 Feb 2025
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Summary
Voldemort found out Harry was a horcrux. Death Eaters were closing in, victory seemed out of reach. Out of desperation, Hermione suggested a ritual.
Reborn into the past, Harry fights for the future.
Series
- Language:
- English
- Words:
- 40,394
- Chapters:
- 10/?
- Comments:
- 581
- Kudos:
- 3,504
- Bookmarks:
- 1,379
- Hits:
- 65,914
Bookmarked by GuestofaGuest
03 Jun 2024
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Summary
Twenty years ago, Voldemort won the Battle of Hogwarts, then the war. Harry now guides the remaining resistance through the Magical Curtain that separates the rest of the world from Voldemort's Empire, where magic is out in the open and wizards reign free.
I wanted to write about an adult Harry fighting Voldemort. Some authors make their mature Harry travel back in time to weave this plot. I merely made one change to the canon and fast-forwarded some years ahead.
Canon loyal, not dark.
Adventure, not angst.- Language:
- English
- Words:
- 127,588
- Chapters:
- 19/30
- Collections:
- 2
- Comments:
- 131
- Kudos:
- 255
- Bookmarks:
- 155
- Hits:
- 16,418
Bookmarked by GuestofaGuest
31 May 2024