Thieves who raided New Pitsligo, Aberdeenshire, post office on Thursday, June 18th, 1981, got away with just £79, missing out on £4,500 in pension cash on a sofa. They also left the body of the post-mistress, Miss Dorothy Park, 63, bound and gagged in her flat at the back of the shop – where she died in agony from suffocation on her kitchen floor.

The one clue concerned two strangers seen in the village the night before the murder. Both were in their 20s, and they sped off into the night in an off-white car.