In February of that year, Jack Sheppard, in partnership with his brother Tom and his mistress Elizabeth Lyon. Initially Tom was arrested - but informed on Jack. He had been caught once himself and been branded for the crime and fearing the hangman's noose elected to rat on his brother.
Jack was duly arrested when one of the criminal gang he hung around with betrayed him to the police in return for the usual £40 reward. Sheppard was duly imprisoned on the top floor of St. Giles's Roundhouse while awaiting questioning, and it was from here that he staged the first of the escapes for which he would become famous. Breaking through the wooden ceiling onto the roof, he lowered himself to the ground using bedclothes tied together as a makeshift rope, before joining the crowd that had gathered to watch the escape.