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The Nature Of A Soul by Lemmerman
Fandoms: Stranger Things (TV 2016), Shadowhunters (TV), The Mortal Instruments Series - Cassandra Clare
27 Jun 2025
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Summary
For Shadowhunters, the world’s defenders against the army of demons constantly encroaching from other dimensions, one rule is paramount above all others – demons must die.
But when San Francisco’s top Shadowhunter, Steve Harrington, comes across one specific demon, he finds himself doubting something he thought was true his entire life.
Because this demon can talk. Can think, and joke, and flirt. He even has a name – Eddie.
And yet somehow Eddie is the least of Steve’s problems, because it seems there’s also a serial killer on the loose along with a strange sect of demons that no one seems to be able to identify.
With his parabatai Robin at his side, Steve must uncover the mystery behind these murders, and the even darker designs that their orchestrator has in mind not just for Eddie, but for the entire Shadow World.