As if stumbling out of a nightmare, rookie cop Alex Kincaid awakens in her car dazed and confused. She is on an unfamiliar street, outside an unfamiliar home with no recollection of how she got there, no memory of the night before. Then the real nightmare begins: her first call takes her to the very same street, same house, where a man has been brutally killed, and she finds herself as the main suspect in his murder.