Dark Heart is a British television crime drama series, based on the Will Wagstaffe novels by writer Adam Creed, that first broadcast on 9 November 2016. The series stars Tom Riley as DI Will Wagstaffe, a police detective haunted by the unsolved double murder of his parents when he was just sixteen years old. A single feature-length pilot, based on the novel Suffer the Children, was written by Chris Lang and directed by Colin Teague. It first broadcast on ITV Encore on 9 November 2016. The initial pilot co-stars Kobna Holdbrook-Smith, Tom Brooke, Anjli Mohindra, Charlotte Riley and Miranda Raison.