Season 01, Episode 01
24-year-old Mary Ann Cotton returns home to Seaham, County Durham having eloped to Cornwall with Billy Mowbray. A terrible cycle of births and deaths has haunted the pair but as Mary’s circumstances worsen she finds a deadly solution.
In this chilling 2-part drama, Joanne Froggatt stars as serial killer Mary Ann, a poisoner whose methods leave no visible scars, allowing her tally of victims to mount, unsuspected by a Victorian society unable to conceive of a woman capable of such terrible crimes. Traveling around the North East, she insinuates herself into unsuspecting families, marrying and creating new families of her own – before killing them, taking their money and moving on.