Halifax f.p. S04 E03 Swimming with Sharks

"Dangerous Minds"

A gritty prison setting sees Jane working with an ex-boyfriend to try and uncover a murderer amongst a group of psychopaths - all convicted of murder. Jane begins to realise that there is an alterior motive for this killing, but what can be even more threatening than anything they have already done? A fire soon sees Jane alone in the prison unit with four dangerous killers.