Dead LionsNow a major TV series starring Gary Oldman 'The new king of the spy thriller' Mail on Sunday From the Intelligence Service purgatory that is Slough House, where disgraced spies are sent to see out the dregs of their careers, Jackson Lamb is on his way to Oxford, where a former spook has turned up dead on a bus. Dickie Bow was a talented streetwalker once, good at following people and bringing home their secrets. He was in Berlin with Lamb, back in the