Two years after the events of Tough Love, Lenny Milton has been transferred, but still finds that he is hated by his colleagues, who have branded him a grass. Meanwhile, when a friend of his Lenny's son dies during a heroin-related overdose, a drug-related gang war breaks out, and Lenny seizes his opportunity to re-ignite his feud with drug trafficker Barry Hindes. Obsessed with bring Hindes to justice, Lenny ignores the advice of his colleagues as he sees a chance for vengeance.

Ray Winstoneas DC Lenny Milton
Charlie Creed-Milesas Toby Anderson
Sam Rileyas James Milton
Ralph Brownas Barry Hindes
Jake Woodas DS Pete Ainsworth
David Hemmingsas DCI Tommy Gillespie
Ivan Kayeas DI Ron Featherstone
Mark Lewis Jonesas DC Huw Morgan