"Tempest," derived very loosely from Shakespeare's play, is an interesting concept fatally marred by its length. If a ruthless film editor had been employed to cut the final print, this might have been a really good film. It certainly has the right cast: John Cassavetes, Gena Rowland, Susan Sarandon, Molly Ringwald and Raul Julia. Cassavetes, an excellent actor who largely avoided the mainstream, is the "Prospero" of this film, a "world-famous" architect with magical powers, while Raul Julia is Caliban, recreated as Kalibanous, the lone inhabitant of a Greek Island to which the architect retreats along with his daughter (Molly Ringwald) and his young lover (Susan Sarandon), leaving behind his estranged wife (Gena Rowlands). Each of the five performs extremely well, but there are a host of peripheral characters who should have been left on the cutting room floor and many inessential scenes that should have been dispensed with altogether. Unfortunately, Paul Mazursky, the producer, director and co-author of the script indulged himself and was apparently unable to separate the necessary from the surplus. Still, there are the pleasures of this film: the young Susan Sarandon at her sexiest, Molly Ringwald, not yet famous, Raul Julia, an antic, horny Caliban, and Gena Rowlands and Cassavetes at the peak of their talents. Without those pleasures, I would have given this film a much lower rating.