Watch The Sinner series free. The Sinner is a crime thriller television series that follows a young mother who overcome by an inexplicable fit of rage, commits a startling and very public act of violence – and to her horror has no idea why. The event launches an inverted and utterly surprising crime thriller whose driving force is not the who or the what – but the why. A rogue investigator finds himself obsessed with uncovering the woman's buried motive, and together they travel a harrowing journey into the depths of her psyche and the violent secrets hidden in her past.
