Trixie Belden and the Mysterious Code (Trixie Belden Library, Book 7)

282 pp. Illustrated by Paul Frame. "Principal Stratton wants to get rid of all clubs in Sleepyside High School, including the Bob-Whites! The only way they can save their club is to prove that they help out other people, too. Trixie quickly comes up with a plan to host a benefit antique show and sale. But are the precious antiques in danger from thieves?"