Robbie Coltrane's Critical Evidence S01E07 - Bodies of Evidence

In mid-November 1993, Derek Severs and his wife Eileen disappeared without a word. Their neighbours and friends soon became concerned and contacted the police. After a week, police visited the bungalow in which the couple resided, only to find the previously tidy house was now messy, with the kitchen and bathroom carpets removed and a car covered in mud. When police spoke to their son, Roger, he insisted that his parents were simply on holiday. However there was no evidence of this apparent trip, and Roger was soon arrested on suspicion of murder.

They had a suspect – but no bodies and no conclusive proof a murder had taken place. Roger Severs was staying silent, so it was down to the evidence to do the talking.