First broadcast 1st/2nd April 2012.<br /><br />Following the suicide of colleague Lizzie Fraser, who he believes was scapegoated by police for a wrong decision, Leo comes to work in an angry, bitter mood.<br /><br />Emilia Fox - Dr. Nikki Alexander<br />Tom Ward - Dr. Harry Cunningham<br />William Gaminara - Professor Leo Dalton<br />Adrian Lukis - Simon Avery<br />Victoria Wicks - Lizzie Fraser<br />Helen Sheals - Wraith<br />James Larkin - Greg Matheson<br />David Kirkbride - Lee<br />Jacob Anderson - Dave<br />Vincent Regan - Det Supt Tom Byrne<br />Annabel Canaven - Mary<br />Jaye Griffiths - Janet Mander<br />Nick James - Luke (as Nicholas Fagg)<br />Shelley Conn - DI Connie James<br />Adam Best - DS Winter<br />Lynda Rooke - Ursula<br />Nick Hobbs - Mick<br />Kirsty Bushell - DI Ginny Gray<br />Matt Owens - Leading Firefighter<br />Harmage Singh Kalirai - Dabir Amar<br />Rachael Fagan - Nurse (as Rachel Fagan)<br />Marian McLoughlin - Deborah Harding
