Book excerpt: As children, Connie and Estella were best friends-until Estella was discovered to be a math prodigy, which led to the sisters' estrangement. Now, years later, they are forced to reunite on the Gulf Coast of Florida as they pack up their childhood home and ready it for sale. The reunion comes at a time when both Connie and Estella must come to terms with painful revelations and devastating consequences in their own lives. And once again, her sister's genius may alter Connie's life in ways she cannot control.