DS Jack Weston has returned after his period of enforced leave, and although DI Martha Bellamy is pleased to have him back, she makes it clear he's on his last chance.
Their first case is at a sixth form college where a popular art teacher has been found with life-threatening head injuries. It soon becomes clear the teacher previously reported she was being stalked to DC Charlie Steele, who is beside herself with guilt over not having prevented the attack.
As the cops close in on the culprit, the list of suspects grows. Did violent and aggressive college handyman Harry Webster have anything to do with it? Or college head teacher Rory O'Hanlon? It's not long before a trail of suspicious deaths blows this case wide open. But can the team crack it?
Suspects, C5, 10pm
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