Another puzzler for the author's unassuming, soon-to-retire Superintendent Roper of the C.I.D. (Seascape With Dead Figures). In the village of Kings Minster, the body of Hannah Blezard has been pulled from the river. Thirtyish, the recent widow of the head of Blezard Electronics, reportedly rich and rumored unfaithful, Hannah had several visitors on the last night of her life--and Roper and his team soon establish that she drowned in her own swimming pool. Neighbors Florian Westlake--an obese, asthmatic writer--and his ex-actor attendant, Roland Hollister, are questioned; so are the company's secretary, Ben Marshall; Arthur Chaucer, owner of a boat stolen from its moorings on the fateful night; and others. Meanwhile, reports of frequent visits to the Blezard house by a young man on a bicycle seem to upset touchy Detective Sergeant Clark, who's also the self-appointed nemesis of sleazy voyeur/small-time crook Norman Oates. Matters heat up when Clark disappears, when Oates' savagely stabbed body is found, and when it begins to look as though Hannah was running an elaborate con game of her own. Solid police work and a touch of inspiration suceed once more for Roper as he nets his killer in an un-unstartling but satisfying windup. Convincing characters and interesting subplots enliven this modest but steadily absorbing police procedural. First-class of its kind.