Dark Heart - Season 1 (2018)

Detective inspector Will Wagstaffe fights crime tirelessly, his way to deal with the murder of his parents, which he never got quite over even if he just lived longer without then since. He's a model uncle for his sister's doting pre-teen son Harry 'Hal', but she decides to sell the parental home and move in with her partner Paolo, the new surrogate father. Will must cancel his holiday to lead the investigation into a series of vigilante crimes, sadistic (near-)murders on never-convicted, probably guilty pedophile rapist suspects. Will shakes his team' reluctance to ...

As the team delve deeper into the mysterious poisonings, attempts to cover up the supply chain signifies to Staffe that those responsible have a powerful influence. But as the pressure builds for Staffe to excavate buried links between Sofie Cerna and Nick Kyriacou, storms brew closer to home. Staffe makes his sister's fiancé Paulo an offer that will have far reaching consequences, but an unforeseen revelation puts him less in control of the situation than he had designed.

DI Will Wagstaffe and his team investigate the mysterious death of a young nurse on the London Underground in very unusual circumstances. Whilst he continues to deal with personal issues with his sister and unusual behaviour from his nephew.