2. Immune

An armed robbery at a fast food restaurant leads Ronnie and Sam to Frank Donovan, a convicted criminal who is believed to be the accomplice in the robbery. Donovan reveals that he and his former cellmate, Jamie Harper, robbed the joint after they ran into a gambling debt – and that after their getaway car broke down, in the midst of Harper shooting an innocent bystander, kidnapped an innocent man, Michael Coombs, and ordered him to drive them away. Coombs, a father of two who suffers from severe asthma, is nowhere to be found – and Donovan insists that for information on his whereabouts he must be given immunity against being prosecuted for the murder of the innocent bystander, and instead be tried for manslaughter.

Jake and Alesha agree to the deal, however, Donovan's information leads to Coombs' corpse, and thus, they realize they have been duped, as Donovan would have known Coombs was already dead. In court, Jake attempts to overturn the immunity agreement, which comes up against some scrutiny from Donovan's brief, Miriam Pescatore ( Tamzin Outhwaite ). However, the case soon swings in his favour when Donovan's accomplice Jamie Harper is found dead and buried in the woodlands. Jake agrees to let the immunity agreement stand, but thus, pleads that separate to the charge of manslaughter, Donovan should be tried for Harper's death as it were a separate incident.