Subscribe now for more! Broadcast on 27/10/16 Joanne Froggatt describes the shift in roles from playing a maid in Downton Abbey to a .
Actress Joanne Froggatt explores the painful past and nuanced character of real-life serial killer Mary Ann Cotton from Dark Angel, as seen on MASTERPIECE .
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The real life story behind ITVs Dark Angel - not sure how accurate either are though. However if you want more analytical & factual info checkout the .
