On vacation, Della Street meets Dianne Alder, a ravishing blonde who is putting away five square meals a day, having signed a contract to gain weight in order to model clothes for "stylish stout" women. "That's the damnedest contract I've ever read," Perry Mason said to Della..."why would anyone hire a girl with the figure of a strip teaser and pay her $100 a week to put on weight?" The contract is a bad one—it promises the modeling agency 50% of future income—and when it turns out Dianne's father is a millionaire, Mason suspects she is being seriously set up. Then the agent who signed her is murdered...