Ghost Story (fanfic)

Massive unmarked spoilers for the Dresden books Changes and Ghost Story ahead!

Ghost Story by Nuts! (FF.Net version under the alternate identity of Norwest) is a The Dresden Files/Mass Effect crossover fanfic.

Harry Dresden is dead. So is John Shepard. There is no rest for the weary, however, for Upstairs is sending them to the other's universe to set things right.

The author's usage of first person for Harry and third person for Shepard is entirely deliberate.

Tropes used in Ghost Story (fanfic) include:

And I Must Scream: The Soulgazed Husk and the people making up Sovereign.
Damn You, Muscle Memory!: Shepard tries to blend in by pretending to use his omnitool, forgetting that the people of Harry's time don't have omnitools.
Didn't Think This Through: Shepard wants to burn Little Chicago to deny enemies its use, but has to be reminded that things that happen to it affect the real world. Fortunately, Murphy has a solution.
Dying Moment of Awesome: Carlos facing a Geth army and Sovereign and actually doing some damage.
Evil-Detecting Dog: Murphy tries to convince Molly that Shepard's alright by reminding her that Mouse hasn't had his usual reaction to Outsiders around Shep.
Expy: Harry's picked up a Bob-equivalent in Fido and a "replacement" for Murphy in Ash.
He Knows Too Much: Why Carlos has to die.
Outside Context Villain: Shepard in the Dresdenverse with his biotic powers is a different game from the native magic. Harry in ME, not so much given that human wizards are still a power.
Stab the Scorpion: Shepard body-slams Tilly out of the way of a beastie.
Story-Breaker Power: With all the tech in ME, Harry's Walking Techbane status would make him broken. The author's fix is making Eezo prevent that.
You Can't Go Home Again: If Harry returns to Earth, Mab will know instantly and reclaim him.