Dark Angel - Sunday 11th December from 9pm

Watch both episodes of Dark Angel from 9pm on Sunday 11th December

Dark Angel is a two-part drama based on the extraordinary true story of the Victorian poisoner Mary Ann Cotton, played by Golden Globe winner and Emmy award nominee Joanne Froggatt (Downton Abbey).

We meet Mary Ann as a loving wife and mother, newly returned to her native North East of England. But faced with abject poverty and an ailing husband, we see how ruthlessly determined she is to pursue her desires - and a better life ...