Hollister is an undercover operative who's been picking up odd radio signals from the Addams house. Convinced they're spies, he recruits the postman, Briggs, to help. Briggs panics when he gets in the house, though, and flees. Hollister then tries the plumber, Conkey, who's been called in to fix Kitty's water fountain. When Conkey acts suspiciously, Gomez calls the authorities endi