Isabelle Flanders Tookus isn't expecting to involve the Sisterhood in a new mission when she strikes up a friendship with a curly-haired boy in her local park. Ben Ryan is eight years old, sweet, funny and smarter than most adults, a child genius, in fact. He's also in much deeper danger than he realises. Ben is the grandson of millionaire Eleanor Lymen, who hired Izzy years ago to design an institute for gifted children. Ben's mother passed away...