This week’s...
Worst ordeal A couple and their baby are Stranded in the Snow (Sun, C4, 4.45pm)
Most welcome return David Attenborough examines Life in Cold Blood (Mon, BBC One, 9pm)
Most contentious list Horizon asks Is Alcohol Worse Than Ecstasy? (Tues, BBC Two, 9pm)
Most successful clone Keeley Hawes experiences Life on Mars in Ashes to Ashes (Thur, BBC One, 9pm)