sentences:  Also on the island is Isabelle, the teenage daughter of Stark's game warden; Isabelle's parents are away for medical reasons.As Stark, Nick, and Jack badger Farrell for the formula - the original documents for which he has secretly destroyed - by offering him cheques for $1 million each from their Swiss bank accounts, Jill discovers the dead body of Charles on the beach.Having already sent the motor launch away to prevent Farrell from leaving the island, and with the radio out of commission, Stark has no way of contacting the mainland.