Superb, darkly and wickedly comic whodunit from screenwriters Stephen Sondheim and Anthony Perkins, with all the pieces right there for you to place. Cunning James Coburn is the movie producer and game-aficionado who invites to his yacht the failed screenwriter (Richard Benjamin), his alcoholic wife (Joan Hackett, in a sympathetic performance), the catty agent (Dyan Cannon, more wired than ever before), the starlet (Raquel Welch, looking a bit dazed), the starlet's husband (Ian McShane) and a director down-on-his-luck (James Mason, the calm-head who pays attention to the details). The only trouble with "The Last of Sheila" is that the first-half, involving a hilarious personality game, is so clever, we want more of it; the murder-mystery second-volley is an acting showpiece, but not quite as engaging. Still, these characters are a wonderfully tainted, self-absorbed lot, and Cannon's mini-breakdown after someone almost offs her is a wild bit of hysterical showing off. I also admired Welch's scene at midnight on the top deck, talking about stealing a coat (she's very seductive and charming, though she continues to whisper her dialogue throughout the film and fails to make the strong impression each of her co-stars do). The character conflicts and the reasoning behind who-does-what-to-whom doesn't bear a great deal of scrutiny (and even after several viewings, I'm still not clear on that business regarding the cabin keys); however, the picture is extremely entertaining, a verbally exciting match-of-wits by a group of Hollywood hopefuls and burn-outs. ***1/2 from ****