Nobody walks

Tom Bettany, a British ex-spy crammed with dark skills, comes out of retirement when he learns his estranged son is dead. His quest leads him to the shadowy Vincent Driscoll, head of the software-design firm Liam worked for, and to the bizarre Dame Ingrid Tearney, head of the Intelligence Service, who is either worried that Bettany will discover something better kept under wraps or else wants Bet...