All five two-part episodes from series 17 of the BBC crime thriller. Forensic experts Dr Nikki Alexander (Emilia Fox), Jack Hodgson (David Caves) and Leo's replacement Dr Thomas Chamberlain (Richard Lintern) investigate various cases including the gruesome murder of a lap dancer found in a remote Scottish forest and a serial killer kidnapping children. The episodes are: 'Commodity', 'Coup de Grace', 'In a Lonely Place', 'Undertone' and 'Fraternity'.