This one-night drama tells the extraordinary true story of Victorian poisoner Mary Ann Cotton, played by Golden Globe winner and Emmy award nominee Joanne Froggatt (Downton Abbey).
Program Website01:45
Joanne Froggatt on Dark Angel.
01:28
See a scene from Dark Angel.
01:46
Joanne Froggatt on
03:30
Actress Joanne Froggatt explores the story of serial killer Mary Ann Cotton.