In a prequel to Undercover Nudist, murder once more turns up at Oak Grove Nudist Camp. Suspect number one is Barbara Bassett, self-proclaimed thief—"not a robber, they're violent!" who turns up at the camp while looking for a place to hideout from a would-be partner in crime. Unaware that Barbara is a "nice" sort of thief who specializes in stealing things people don't really need—like art and jewelry—Ned Nackero and Carola Szegy befriend the self-proclaimed thief and cook for her while seeking a solution to the crime. At Oak Grove, Barbara has found new friends and a safe haven. In fact the only real complication seems to be that she's falling for the local Sheriff—not necessarily a great choice, given her line of work.