A hoked-up fourth outing (A Candidate for Murder, etc.) for ad-man sleuth Ev Franklin, of New York's Finch, Rowan and Hyde, who finds himself at a board meeting on the Caribbean island of San Sebo--and becomes a puzzled observer of the deaths of randy, old board-chairman Henry Oldes and his stiffly disapproving wife Elizabeth. Henry, a corporate powerhouse, was a threat to several of the guests, most urgently to Loretta and Randolph Holland. And unlovable Elizabeth had made it clear that she'd be no more charitable. The deaths are efficiently whitewashed by Sarge, the island's chief honcho, for whom the tourist trade is all. But back in New York, Ev fuels his suspicions with a series of unlikely confrontations with Loretta Holland, TV-commercial producer Ken Tillson, and others; a fast trip back to the island, and a lot of hashing things over with wife Jane and repellent stepson Billy. Curiosity and a sense of justice are satisfied at last, but the plot is as contrived as one of the ad agency's campaigns and no more involving for the consumer. Aside from a few hapless San Sebo natives, there's not a likable character in sight, and Ev himself comes off as a nervy busybody. Disappointing.