American-International's Beach Party series came to an abrupt end with Ghost in the Invisible Bikini. Because of such tangible reasons as contractual commitments, coupled with such intangibles as illness and death, most of the series "regulars" are absent. Deborah Walley and Aron Kinkaid fill the roles usually played by Annette Funicello and Frankie Avalon, while Benny Rubin plays a comic-Indian role obviously intended for Buster Keaton. Only Harvey Lembeck, as the inimitable Eric von Zipper, is on hand from the good old days. The plot is set in motion by the ghostly Boris Karloff, a corpse who must perform one good deed before gaining entrance into the Hereafter. Together with a sexy spirit (Susan Hart) (the titular lass in the invisible bikini), the corpse attempts to save the heiress (Walley) from the murderous machinations of a greedy attorney (Basil Rathbone) and his cohorts (Rubin and Jesse White). Music is provided by such second-generation celebs as Nancy Sinatra and Claudia Martin, and with The Bobby Fuller Four lip-synching a pair of songs. The climax is a less-funny reworking of the final sequence in Beach Blanket Bingo, with the heroine (Walley) strapped to the longest buzzsaw plank in film history.
by Hal Erickson synopsis