The Girl on the Train (2016)
Rachel Watson, devastated by her recent divorce, spends her daily commute fantasizing about the seemingly perfect couple who live in a house that her train passes every day, until one morning she sees something shocking happen there and becomes entangled in the mystery that unfolds. infidelity, new york city, amnesia, based on novel or book, obsession, homicide, blackout, alcoholism, flashback, confusion, memory loss, domestic abuse, disappearance, female protagonist, psychological thriller, train, divorcee, missing person, police investigation, ex-husband ex-wife relationship, unreliable narrator, voyeurism, abuse, alcoholics anonymous