While under pressure to discover the truth behind the murder of young Joanna, DCI Boyd (Trevor Eve) slips up and makes possibly some irreversible mistakes.
Joanna's killer begins stalking her sister.
Quest roles:
Sophie Winkleman, Louise Delamere, Cherie Lunghi, Roger Allam, Jack Ellis, Steve Toussaint, Ralph Nossek, George Calil(David Gold), Paul Bazely(Doctor), Justin Shevlin(Mark Kaufman), Gabriella Saunders(Kirsty Ashcroft)