After enduring the worst school year of her life, eleven-year-old Jessie O'Malley is horrified to learn she's being packed off to spend the summer with her eccentric Aunt Morgan. But from the moment she sets foot on Crow Island, strange and uncanny things begin to happen. Even Jessie's own wild imagination could not have conjured up the adventure and excitement she encounters--or the magical world her aunt inhabits. Following the clues found in a strange, cryptic poem and an ancient Native American legend, Jessie embarks on a dangerous quest that will take her deep into the mysterious, sacred caves of Crow Island. There, she faces a perilous choice, one that will change Aunt Morgan's future and Jessie's own life forever.