Customs agents go undercover to infiltrate Britain's most dangerous drug gangs, following a thrilling criminal investigation based on extensive research and interviews with those involved in the top-secret operation.
Tom Burke, Steve Coogan, Tom Hughes, Charlotte Ritchie, Hayley Squires, Douglas Hodge, Aml Ameen, Jasmine Blackborow, Gerald Kyd, Kem Hassan, Mario Assi, Johnny Harris, Joshua Samuels, Tom Christian, Paris Benjamin, Murat Erkek, Tuncay Gunes, Celi Crossla
