A sixteen-year-old girl who was raised by her father to be the perfect assassin is dispatched on a mission across Europe, tracked by a ruthless intelligence agent and her operatives.
Set from 1965 into the 1970s, the show follows Endeavour Morse in his early years as a police constable. Working alongside his senior partner DI Fred Thursday, Morse engages in a number of investigations around Oxford.
Marcella Backland left the Metropolitan Police for the sake of her family, only to have her husband leave her. She returns to her job on the murder squad, investigating a case that seems disturbingly familiar to her.