Lucy sneaks into the Mertzes' apartment to borrow one of Fred's suits so that she can order him a custom-made tweed suit for his birthday. This leads Ethel to think that Lucy is the notorious neighborhood burglar, "Madame X", and she goes spying on her friend to prove it.
Keywords: bandleader , friendship , housewife , husband-wife-relationship , neighbor , new-york-city , nightclub-entertainer , singer , sitcom , slapstick-comedy , tv-shows-online , redhead