Murder by the Sea examines some of the most extraordinary murder cases in Britain's seaside towns. From Blackpool to Bournemouth, Southport to Pembrokeshire, people love to be beside the seaside, but away from the piers, the arcades and beautiful beaches lurks some dark secrets.

From serial killers to a 1950s poisoner, from cruel husbands to an unusual murder by a mother and son, these are the true stories of wives, couples and families who had the misfortune to encounter a killer in their everyday lives.