Plot: A successful FBI profiler, Illeana Scott (Jolie), is summoned to help out Canadian law enforcement in Montreal, to hunt down a serial killer who assumes the lives and identities (hence the title) of the people he kills as he travels across North America, which forces Illeana to adjust to working in a strange city with a police team with which she doesn't really fit in.

Tags: alienation, art gallery, artist, assumed identity, based on novel, betrayal, blood, blood splatter, breasts, burnt body, canada, car accident, car chase, chase scene, corpse, crime solving, death, decapitation, decomposed body, detective, disgraced agent, disturbing, dutch, exploding car, faked pregnancy, fbi, federal bureau of investigation, female frontal nudity, female nudity, hit by car, hit in crotch, intuition, investigation, loss of son, mistaken identity, mother son relationship, murder, murder investigation, pennsylvania, pizza, police, police investigation, police officer killed, premarital sex, profiler, psycho thriller, psychological thriller, psychopath, quebec city, scissor stabbing, serial killer, severed finger, severed hand, severed head, sex, shot in the chest, shot to death, stabbed in the chest, stalking, stolen identity, tense, title spoken by character, twist in the end, unconventional romance, show all tags.