Season 9, Episode 2:
When the body of young PE teacher Jason Bowe is discovered in woodlands adjoining a prestigious boarding school, UCOS are asked to investigate the case quickly and discreetly. However, with the school busy preparing for a visit by prominent MP Geoffrey Parks, its headmistress is less than happy about the UCOS team's presence there. When Standing makes a discovery about another teacher, the team realize that they're dealing with a much wider and more complicated series of crimes that go back many years. Meanwhile, Standing pushes Pullman to find a replacement for Halford, and Lane struggles to cope with the secret he's been keeping.
A motley crew of retired police officers re-opens troublesome cases that were never laid to rest.