New Tricks: Roots

After Sandra's departure, the detectives are anxious to meet their new boss, and DCI Sasha Miller wastes no time getting cracking with her first Ucos case, the murder of an Italian immigrant on a west London allotment 25 years earlier. The ritualistic style of the killing puts one of the other gardeners in the frame when it's revealed he is a practising druid. However, as the investigation continues, Gerry becomes suspicious of Sasha - why is she kissing a senior officer? Tamzin Outhwaite joins the cast as DCI Miller, with Dennis Waterman, Denis Lawson and Nicholas Lyndhurst