After doing some research, Larry finds evidence that Mary Anne is a serial killer but Jennifer is very skeptical since she's known her all her life. But Larry gets scared when Mary Anne is planning on taking Balki mountain climbing, and when Jennifer gets called into work, he thinks that Mary Anne killed her. It turns out to be a total misunderstanding.
Elenco: Bronson Pinchot , Mark Linn-Baker , Anton Lesser , Alisan Porter , Belita Moreno , Ernie Sabella , Jo Marie Payton , Sam Anderson .