By Howard R. Lemcke. Previously published as Death in a Fishpond; wise choice to update it, IMO. Also: "With evidence pointing to a tragic accident, and David [Mead] the model of a bereaved widower, the case was ready to be closed" could be fully two thirds of the Dateline catalog, no?
This paperback is ready to be opened -- by you! ...I'm sorry. But it's true! This one's in nice shape -- some edgewear, a very slight spine lean, and a star sticker at the top of the spine, but said spine is uncracked, and the pages are clean and tight.