The Case of the Negligent Nymph — Erle Stanley Gardner

While Perry Mason is enjoying a moonlit canoe ride, he admires a naked bathing beauty. Little does he know he'll soon be rescuing her--and that the next day he'll have to clear her of a jewelry-theft charge. But then she's suddenly charged again--this time with murder. It takes all of Perry's wiles, Della's insights, and Paul Drake's deft detecting to solve The Case of the Negligent Nymph.