The trailer for The Poison Tree

Starring Downton Abbey's Matthew Goode and The Witcher's MyAnna Buring, the series follows a woman named Karen, whose husband Rex is released from a 12 year prison sentence for murder. The story is told through flashbacks to the 1990s, when 19-year-old Karen, an ordinary girl from Warrington, first became involved with free-spirited bohemian Biba (Ophelia Lovibond), and her brother Rex.