 Eventually, it becomes clear that Yvonne and Fenner couldn't co-exist within Larkhall for much longer and Yvonne arranged for a hitman to dispatch him.Unfortunately for her this was unsuccessful - due to a tip off from officer Colin Hedges (Tristan Sturrock) - and ultimately, Yvonne and Fenner's long "contest" of one-upmanship culminates in Fenner locking Yvonne in a disused hanging cell on a redundant wing at the prison.During the first episode of Series 6, inmate Kris Yates (Jennifer Ness) discovers Yvonne's decomposing corpse.