drug dealer, amnesia, insulin, tattoo, waitress, motel, manipulation, flashback, confusion, revenge, murder, memory loss, memory, psychological thriller, whodunit, los angeles, california, polaroid, based on short story, nonlinear timeline, mourning, insurance agent, individuality, phone call, disturbed, paranoid, neo-noir, somber, reverse chronology, remember, bewildered, bold, complicated, suspense mystery,