Following the death of the head of a notorious crime family, Lenny visits his successor, the police mole Jude Cassidy.

Lenny wants to persuade him to come under police protection. Jude and an accomplice have recently been acquitted of the murder of a young black man whose cousin, Elviss Gilroy, is making plans to avenge his death.

Reluctantly, Jude agrees to go into hiding, under the protection of an even more reluctant John Mercer.

Leaving Calum to watch over Jude, Mercer goes to visit his sister Jess. Cooped up in the little council flat, it takes no time for Jude’s true nature to emerge and he starts taunting Calum about his mother.

Mercer gets a call from a hysterical Calum, who has lashed out at Jude with terrible consequences.