18 parts Complete After weeks of working one gruelling drug case, Jake finally gets a lead that can get him to one of the biggest suppliers in the city. However when the bust goes sideways, Jake ends up disappearing into thin air, his badge and gun discarded on the road and his radio smashed into thousands of pieces.
After a year of searching, the nine-nine are still unable to find the missing detective and Amy, as well as the other detectives on that case, start to believe he's dead.
By some miracle, however, one year after the detective goes missing, he shows up randomly in the precinct to report a crime. The one problem, he doesn't recognise the building or anyone inside of it. He doesn't even recognise his own name.
(Cross-posted on AO3 under the same name)