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 an eight-year-old child genius, the grandson of millionaire Eleanor Lymen, who hired Izzy years ago to design an institute for gifted children. Ben's mother passed away and Ben now lives with his stepfather, Connor, and Connor's wife, Natalie. They've been using Ben's trust fund...