Girls, boys, and ghosts . . . Identical twins Jessica and Elizabeth Wakefield can't believe they're finally at sleep-away camp.  Even though there are no boys, and Elizabeth's friend Grace had to cancel her plans to go at the last minute, it mall be two whole weeks of fun, fun, fun! The twins waste no time diving into their favorite activities.  Jessica begins to arrange a rendezvous with the boys' camp across the lake.  Elizabeth spends much of her time horseback riding and making new friends.  But the real excitement starts when Grace turns up in the most unexpected place. Should the twins take a chance and hide Grace?  If they do and they're caught, camp may just turn out to be the worst two weeks of their lives!