‘It’s the worst feeling in the world,’ says Donna as this three-part series about missing people concludes.

Donna’s uncle Archie is 82 and has Alzheimer’s, and has been reported missing from his Darlington home by his son, Peter.

A former paratrooper, the now vulnerable Archie loves walking and the outdoors, and as time passes without a confirmed sighting, the search area becomes larger and the situation more worrying.

Is somebody concealing information about Archie’s last known movements?

Could his disappearance be connected to his distress over the recent death of his wife?

The tension is almost unbearable as the situation becomes ever more urgent.