Episode 2

S4 E2: A dismembered body is discovered and DCI Roz Huntley fails to report for duty. AC-12 crank up their investigation into Operation Trapdoor, concerned that Michael Farmer will go to jail for crimes he didn't commit. With suspicions growing that Roz withheld crucial evidence, a new DCI is drafted to run Operation Trapdoor. Kate makes progress in her undercover role, but AC-12's investigation falters when they realise that their main informant has also gone missing.