S16·E4 Thug On The Tyne: Part II

Although they are undercover, Burnside agrees to let Liz Rawton visit her mother. Despite a close shave at a family gathering when her cousin's boyfriend turns out to be an associate of Saul Anderson, Rawton and Burnside survive with their cover intact. Burnside even takes part in a little karaoke! Burnside is not pleased when Customs seize a crateful of guns meant for Anderson that he was supposed to see through. Anderson is not pleased either, and takes Burnside for a little drive. Bonnet and Anderson turn against each other, and Anderson is shot. As Bonnet is about to shoot Burnside as well, armed police arrive and he ends up shooting himself.