Christopher Eccleston has gone from Time Lord to drug lord for a tense new BBC thriller.
The actor - recently seen as John Lennon for BBC biopic Lennon Naked - is among the stars for complex six-part series The Shadow Line.
The major series, to be screened by BBC2 next year, examines the impact of the death of underworld figure Jay Wratten (Rafe Spall) on a range of figures.
Other leading names who will star in the conspiracy drama include American Gangster actor Chiwetel Ejiofor, Sir Antony Sher and Stephen Rea.
The series is written, produced and directed by Hugo Blick, who made Marion And Geoff with Rob Brydon.
Former Doctor Who actor Christopher stars as a drug lord who risks everything in a final make-or-break deal in the tale of a web of interlocked lives.
The BBC said: "The Shadow Line explores the morality of these characters as they negotiate the repercussions of Wratten's death, and attempt to navigate the fine line between right and wrong."
Also in the cast are Lesley Sharp, Kierston Wareing and Freddie Fox.
Ben Stephenson, BBC controller for drama commissioning, said: "Chiwetel and Chris are two of our finest actors and we couldn't be more excited to have them, and the rest of the amazing cast, on board for this original and epic six-hour series."
Filming begins in the Isle of Man this month.