First broadcast 7th May 2009.<br /><br />During a reconstruction of a knife crime for trainee police officers, one lecturer, Michael Shearer, accidentally kills another, Alistair Matheson.<br /><br />Blythe Duff - DS Jackie Reid<br />John Michie - DI Robbie Ross<br />Alex Norton - DCI Matt Burke<br />Colin McCredie - DC Stuart Fraser<br />Katrina Bryan - Ellis Sinclair<br />Andrew Byatt - Shearer<br />William Armstrong - Parkes<br />Martin Haddow - Goldie<br />Margo Gunn - Pippa<br />John P. Arnold - Matheson (as John P Arnold)<br />Colin Harris - Eugene<br />Francesca Dymond - Doctor
