Just before leaving on a business trip, Darrin is given a gift by Samantha: a tiny pin in the shape of a Siamese cat. Thus, when Darrin finds himself on board a yacht with gorgeous female client Margaret Marshall (Martha Hyer), he is convinced that Margaret's pet Siamese is really a jealous Samantha in disguise. This episode was co-written by veteran Hollywood scenarist Richard Sale and his wife, Mary Sale. "The Cat's Meow" was first telecast on January 21, 1965. ~ Hal Erickson, Rovi