Pony Party! (Sleepover Squad)
P. J. Dentonis a pseudonym for Catherine Hapka. She has written for dozens of series, including Sleepover Squad, The A Circuit, Nancy Drew, The Saddle Club, Sweet Valley Jr. High, Sweet Valley Twins, Magic Attic Club, Wild at Heart, Ghosts of Fear Street, Making Friends, Wonder Girls, Dinotopia, and Avalon. Cathy lives in Pennsylvania.