First broadcast 31st January/1st February 2013.
The body of young Colin Connor is found in an attic at a former hospital now marked for residential development.
Emilia Fox - Dr. Nikki Alexander
William Gaminara - Professor Leo Dalton
David Caves - Jack Hodgson
Josef Altin - Colin Connor
David Westhead - DI Bob Cherry
Mark Womack - Tom Hancock
Pasha Bocarie - Dr. Sanjeev Jumani
Syreeta Kumar - Duty Nurse
Jake Arrowsmith - Peter Hancock
Velile Tshabalala - Kristen
Paul Bridle - Tactical Support Leader
Scott Lane - Armed Officer
Liz Carr - Clarissa Mullery
Anna Jaskolka - Agency Nurse
Richard Johnson - Sir William Embleton
Adie Allen - Stella Hancock
Wayne Foskett - Brian Blackburn
James Burrows - Derren Blackburn
Cal MacAninch - David Loader
Kevin McGowan - Company Commander
Tim Preece - George Ryder
Teresa Banham - Alison Ryder
Ed Stoppard - James Embleton
Nicola Goodchild - Jennifer Larsen
