The self-confessed killer told a colourful story. He was Arthur Pank, a 36-year-old soldier with 19 years’ service, and he told the police that on APRIL 23rd, 1919, he had accompanied his sister-in-law to see his brother in the City of London. He said she then insisted on his escorting her back to her home in Tottenham, where she showed him pornographic photographs and wanted him to have sex with her. When he refused they had a row, and in his anger he shot her.

In his summing-up at Pank’s trial, the judge said he didn’t believe his story. Pank was then convicted and sentenced to death.

Then it transpired that the judge had been misled about the date and nature of an operation which could have deprived the victim of sexual desire, and subsequent inquiries established that Pank’s story was substantially true: his sister-in-law was a nymphomaniac.

This was brought to the attention of the Home Secretary, the judge saying that if the jury had known the full facts they would have recommended mercy, which would have had his full support. Pank’s sentence was therefore commuted to life imprisonment, and he was released after serving eight years.