DI Gabriel leads the investigation into a drug baron's death and finds himself in a race with the baron's dealers.
The driver of Wratten's car is identified, and Gabriel and Joseph Bede want to get to him first.
Bede finds himself in charge of the cartel, while Gabriel defies orders to stop investigating the Wratten murder.
Jay Wratten's insistence that Bob Harris is responsible for his uncle's murder causes problems for Bede.
Gatehouse finally tracks Glickman down, with explosive consequences. Gabriel gets closer to learning why he was shot.
Gabriel reveals dark truths about Counterpoint that implicate his colleagues. Bede gets closer to leaving the drugs game.
Bede desperately tries to complete the final drug deal as his wife's condition deteriorates rapidly, while Gabriel faces a shocking confrontation with Gatehouse.
