Campbell, Julie

While exploring a deserted cottage, Trixie Belden and her best friend discover a stolen diamond.

During Christmas vacation at an Arizona dude ranch, Trixie Belden and the other members of the Bob-White Club help the ranch's owner learn why his workers have left so mysteriously.

The discovery of poacher tracks on a game preserve spells mystery for Trixie and her gang.

While traveling by the trailer in upstate New York to find a runway, Trixie Belden and Honey Wheeler investigates a case of mysterious trailer thefts.