The third episode of Murder by the Sea on CBS Reality is about a case that is 100 years old. The murder of Mamie Stuart was all made all the more unhappy because this was a crime in which the killer escaped justice.

Mamie, a 26-year-old chorus dancer, disappeared in 1919. She had married to a man called George Shotton in 1918.

They met soon after Mamie had finished a tour on stage and she had returned home to Sunderland. Shotton, something of a charmer and 13 years older than Mamie, was a marine surveyor. He was in Sunderland on business when he encountered Mamie in 1917.

Marriage turns violent

Once they were married Mamie went to live with Shotton at his home in Swansea. Having led what was probably a precarious but lively existence as a dancer, Mamie soon found domestic life with Shotton a living hell.