First broadcast 3rd September 2012.
Still missing Jack, the team reopens the disappearance five years earlier of PE teacher Jason Bowe when human remains are found at Peregrine Manor school, where he taught.
Alun Armstrong ... Brian Lane
Amanda Redman ... Det.Supt.Sandra Pullman
Dennis Waterman ... Gerry Standing
Susan Jameson ... Esther Lane
Nicola Walker ... Helen Hadley
Brian Pettifer ... Archie Milgrow
Susannah Harker ... Elizabeth Clayton
Phoebe Fox ... Eleanor Higgins
Sam Crane ... Oliver Lebbon
Lucy Phelps ... Melissa Parks
Tony Gardner ... Lucas Graves
Billy Matthews ... Jacob Longley
Tom Knight ... Geoffrey Parks
Paul Blackwell ... Prison Officer