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As their summer on Gull Island continues, the four twelve-year-old Callahan girls busy themselves with redecorating the Dorm, dealing with their mean neighbor Sloan, and uncovering a secret about t

The twelve-year-old Callahan cousins are staying at their grandmother's rambling seaside estate for a whole summer without parents, but when the usually shy Kate tries to become the "cool" girl in

Four girl cousins spend summer vacation together with their grandmother on Gull Island.

As the four Callahan cousins spend winter break at their grandmother Gee's estate on Gull Island, they fill their time with such activities as sledding, snowman contests, caroling, and a drama-pack