Dark Heart
Available on BritBox, Prime Video
Tom Riley (The Nevers, Da Vinci's Demons) is workaholic DI William Wagstaffe, a young man who has been haunted by the past since the unsolved murder of his parents when he was a teenager. But "Staffe," as he's known, must also contend with murder in the here and now after a series of brutal killings. In the end, the personal and professional collide in this "quality thriller" (The Guardian).