Dark Angel is a British three-part television drama miniseries, based on the adaptation of the book Mary Ann Cotton: Britain's First Female Serial Killer by David Wilson.

[1] The series was broadcast on 31 October and 7 November 2016, and starred Joanne Froggatt as protagonist Mary Ann Cotton, widely regarded as Britain's first known female serial killer, who was found guilty of murder in March 1873 for the murder of three of her husbands, allegedly in order to collect on their insurance policies.

Penny Layden, Laura Morgan, Sam Hoare, and Emma Fielding also took starring roles in the two-part drama.

[citation needed] In July 2015, production and filming began on Dark Angel,[5][6] starring Joanne Froggatt of Downton Abbey as Mary Ann Cotton.

[7] Inspired by the book Mary Ann Cotton: Britain's First Female Serial Killer, the drama used writer David Wilson as a consultant during the script-writing stage.