Factual drama based on the crimes of convicted murderer Malcolm Webster, co-written by Bafta winner Jeff Pope (Philomena). When mild-mannered nurse Malcolm (Reece Shearsmith) is confronted by his new wife over his wild spending, he starts to drug her to keep her quiet. However, a medical check-up then threatens to expose him, so he decides to silence his spouse once and for all. Three years on, he has a new bride - and history appears to be repeating itself. With Sheridan Smith and Kate Fleetwood.