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What is Marcella about? 
Marcella is a gripping crime drama that follows the story of Marcella Backland (Anna Friel), a former London Metropolitan Police Service detective who returns to work after her husband's sudden departure. As she delves into a series of unsolved murders from 2005, she encounters a cast of intriguing characters, including a paedophile, a wealthy millionaire, a 1970s rock star, and a mysterious figure connected to witchcraft. With her estranged husband engaged to his rehab nurse, Marcella navigates a messy custody battle and seeks counselling to help her remember the events of her blackouts. As the series progresses, Marcella's mental health issues come to light, and she takes on a new identity as Keira Devlin in Northern Ireland where she becomes entangled with a wealthy crime family in Series 3. With its dark, twisting plot and outstanding performances, Marcella is an addictive crime drama that will keep you hooked from start to finish.