大象传媒

Seventy-seven-year-old Jean leaves on Tuesday April 17 to catch the bus to a doctor's appointment. It is in Neston, Cheshire, just eight miles away from her home in Thornton Hough in Merseyside, but it has been 15 years since she made the journey there alone. Her son Edward would normally drive her, but he has recently had to give up driving for medical reasons.

As evening approaches and Jean has not returned, Edward and family friend Vicky become increasingly anxious. As the days pass Sgt Lisa Wilson spearheads a large-scale search for the pensioner, and there are revelations about Jean's health and fitness. Bit by bit police manage to piece together CCTV, but it all takes time.

As the investigation develops, Cheshire Police leave no stone unturned, calling in the services of Cheshire search-and-rescue volunteers, the National Police Air Service and the North West Police Underwater Search and Marine Unit.

As the community rallies round to search for Jean, a worrying discovery on the other side of the town raises the possibility of foul play.