Filch is Peachum’s loyal sidekick. He takes care of many of the day-to-day tasks involved in running Peachum’s business, from sending messages to prisoners at Newgate to receiving stolen goods. However, he also expresses reservations about continuing a life of crime—he worries about getting executed and tells Mrs. Peachum that he wants to be a sailor instead. In Act III, he takes over the unusual, exhausting job of sleeping with women prisoners at Newgate (because they cannot be executed while pregnant).