In Suspicious Circumstances S05E02 - The Great Romancer

The story of Arthur Goslett, a South African who settled in London shortly before the outbreak of the First World War. He married a widow and joined the Royal Naval Air Service. But he was suspected of spying for the Germans and was thrown out of the service after being found guilty of bigamy. His past finally caught up with him when one of the women in his life was found murdered. He claimed that another woman forced him to do it.