Book Description: The hit series returns to charm and inspire another generation of baby-sitters! The first three classic BSC books are back, along with a brand-new prequel, The Summer Before.Being a good baby-sitter isn't always easy, and the vice-president of the Baby-Sitters Club, Claudia Kishi, is learning that the hard way. She and the other club members have started getting strange calls on the job. Is it the Phantom Caller, a jewel thief who's been breaking into houses in the area? One thing is certain -- the Club has to take action to protect their kids!