Pool Party Puzzler is an entry in the Nancy Drew Clue Book series, aimed at younger readers. Nancy Drew, Bess, and George are invited to a fun-filled pool party when the festivities are ruined by a sudden mystery. A valuable item, perhaps a special toy or a lucky charm, goes missing from the party host. The suspects are all the guests, and the clues are scattered among the pool floats, towels, and snacks. Nancy must question the partygoers, analyze the strange happenings around the pool, and solve the puzzler to find the missing item and restore the fun before the host's parents find out and the whole party is shut down early.