The search for a hero from Baldock, who went missing off the Norfolk coast after saving the lives of two people, will be the focus of a new Channel 4 documentary airing this week.

The Body Detectives is a new series following former detective and Locate International's Dave Grimstead as he revisits cases of unidentified bodies around the UK.

Episode one, which airs at 9pm tomorrow (July 23), looks at George Johnston, a man from Baldock who went missing off the Norfolk coast back in 1984, after he had saved the lives of two people.

At the request of George's family, Dave and a team of experts search for his final resting place, with the investigation turning in "unexpected directions".

"The Body Detectives is a new series following the work of an organisation dedicated to revisiting forgotten cases, giving a name and a story to each unidentified person and giving the families the solace they seek," a preview reads.

"Ex-detective Dave Grimstead and his team investigate the disappearance of George Johnston - who vanished off the Norfolk coast in 1984 while on a family holiday. George selflessly entered the sea to help a family in distress, but tragically was never seen again.

"Now, George's family seek Dave's help to try and find his final resting place. It's a journey that takes the team in unexpected directions, as they enlist the help of a pathologist, a forensic oceanographer and an expert in facial reconstruction.

"The Body Detectives begins Tuesday, July 23, at 9pm on Channel 4."