The Housewarming The John Larroquette Show : Season 3 Episode 13

Mahalia starts a second career selling real estate, and Carly's millionaire boyfriend Karl is one of her first clients, buying a fabulous house and allowing John live there for free while Karl is traveling. When Carly helps John decorate the house, they consider acting on their romantic feelings for each other -- until a frighteningly jealous Catherine almost burns down the building accidentally.