A mysterious woman, Charlotte, turns up in Dick's life, claiming first to be auditing his class, then to be writing an article about him, then to be an "intellectual groupie." She charms Sally, Tommy, and Harry, who are happy to oblige when she offers to help plan the surprise birthday party that Dick has demanded they throw him. Dick is too busy having his ego stroked, and the family is too busy being grateful for her help, to wonder what Charlotte's real story is -- which they regret when they learn she's an alien hunter, come to dissect Dick's brain with the help of her hulking son, Ned. Although Charlotte's called all the invitees to tell them the party's canceled, they begin showing up anyway, interrupting the skull-cutting process. Ned ties them all up in Mrs. Dubcek's basement. Sally, Harry, Tommy, Don, and the others run upstairs just as the FBI arrives to capture Charlotte, a well-known crackpot who has mistakenly thought any number of innocent citizens to be aliens. The Solom