Dark Angel

The story of Victorian serial killer Mary Ann Cotton, 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.

Synopsis from TMDB

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Cast

Joanne Froggatt

Mary Ann Cotton

Mark Underwood

Fred Cotton

Alun Armstrong

George Stot

Jonas Armstrong

Joe

John Bowler

Mr. Johnson

Sam Hoare

James Robinson

John Hollingworth

Dr. John Maling

Thomas Howes

George Ward

Cast and crew data from TMDB