Jessica Gunning as DC Sophie Carson, the North Derbyshire Police officer on the field in the abduction case.Clive Wood as Robert Weeks, Helen's father.

Sinead Matthews as Paula Days, an old acquaintance from Helen's childhood.Georgia Tennant as Jenny, Helen's sister.Jamie Sives as DCI Jack Gosforth., Week's superior at the Manchester Metropolitan Police.Matt King as Phil Hendricks, a forensic scientist.Ashley Walters as DI Tim Cornish, a North Derbyshire Police officer leading the abduction case.Pearce Quigley as Trevor Hare, the owner of a pub in Helen’s hometown of Polesford.David Leon as DI Adam Perrin, a detective in the Manchester Metropolitan Police and Helen's former fling.Emma Fryer as Linda Bates, the wife of Stephen Bates who is the main suspect in the abduction of two young girls.Ben Batt as DI Paul Hopkins, Helen's partner and fellow detective in the Greater Manchester Police.

MyAnna Buring as DI Helen Weeks of the Manchester Metropolitan Police.

In the second story, a heavily pregnant Helen is pulled into the dark side of urban Manchester as she deals with an unexpected tragedy. In the first story, Helen finds out that she is pregnant and becomes involved in a case in which the husband of her childhood best friend is accused of kidnapping two young girls. In the Dark consists of two stories of two parts each centring around detective Helen Weeks. Production and global distribution was handled by BBC Studios. It is written by Danny Brocklehurst and stars MyAnna Buring as detective Helen Weeks. The series is an adaptation of the Mark Billingham novels, Time of Death and In The Dark. In the Dark is a four-part British crime drama that premiered on BBC One from 11 July to 1 August 2017.

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