Polly returns to report that the visitor was actually
Nimming Ned, who brought in valuables that he stole during a house fire last night.
Mrs. Peachum asks what Polly will do now that she’s married. Polly says
Macheath will support her, but her mother disagrees.
Peachum proposes making Macheath’s possessions common marital property, so that they go to Polly if he dies. (After all, Peachum says, women only get married because they want
“the comfortable Estate of Widow-hood” later on.) Polly is confused and asks what Peachum means. Peachum explains that he’ll turn Macheath in and get him executed (“have him peach’d”). That way, Polly can keep all his money.