Haunted Humans: A Novella
D.J. Demain unknowingly dated a serial killer. When she discovered who he was, she reported him and fled to a new life and a new identity. Six years later, her ex escapes from jail, and he's looking for her.
D.J.'s new life includes new friends, among them a patient at the psychology office where she works: Morgan speaks in strange voices and claims he has other people in his head.
"Haunted Humans" is a 22,300-word Nebula Award finalist, first published in 1994 in THE MAGAZINE OF FANTASY & SCIENCE FICTION.