Advertising executive Charles Schine's marriage to his wife Deanna is deteriorating, and his daughter Amy suffers from diabetes, requiring expensive medication. Charles' story is being written down by a man in a prison cell.
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.
Susan Morrow receives a book manuscript from her ex-husband – a man she left 20 years earlier – asking for her opinion of his writing. As she reads, she is drawn into the fictional life of Tony Hastings, a mathematics professor whose family vacation turns violent.
Three childhood friends, Martha, Walter and Sam, share a terrible secret. Over time, the ambitious Martha and the pusillanimous Walter have married. She is a cold businesswoman; he is the district attorney: a perfect combination to dominate the corrupt city of Iverstown at will. But the unexpected return of Sam, after years of absence, deeply disturbs the life of the odd couple.
When a son and mother move to Seattle in hopes for a better life, the mother meets a seemingly polite man. Things go south when the man turns out to be abusive, endangering their lives. As the mother struggles to maintain hope in an impossible situation, the son has plans to escape.