The Bermuda Triangle has cast a shadow over Sam and Niamh Cutlers' lives since their mother vanished nine years ago. Her whereabouts remains a mystery and every year they return to the Florida Keys with their father, Matt, who is obsessed with solving the haunting puzzle. But Sam is bored with lazing around by the pool while his father hunts for the truth. Craving excitement, he and his friend, Callum, "borrow" Matt's boat. At first it's great fun, but when they find themselves marooned in a terrifying land, the boys realise they too have fallen victim to the Triangle's mysterious effects. Can they find a way home, or will they be lost forever?

Sam and Callum are stranded in the strange parallel world, having been pulled across by the dangerous energy of the Bermuda Triangle. Now they have found Sam's mum and joined her rebel group, who are trying to stop the raptor species from creating even bigger holes in the fabric between the two worlds. Sam is still desperate to find a way home, but how far will he go to get there? Meanwhile Niamh is trying to uncover the truth about the boys' disappearance. Convinced that her brother and Callum are alive despite the authorities suspicions, it's up to her to solve the mystery before her father is convicted of murder.

The third and final part of The Devil's Triangle trilogy, a science fiction thriller set in the Florida Keys. Having crossed to a strange parallel world through a rift in the Bermuda Triangle, Sam Cutler has faced many dangers. Compelling unfinished business has delayed him from seeking a way home, but now Sam may have lost his chance. Hunted by Imperium raptors, he can afford only one priority - survival. Back in Florida, the summer holiday is nearly over. Niamh senses she is close to solving the mystery of her twin brother's disappearance, but the last piece of the puzzle remains elusive. Their mental bond appears to be the key, but can she figure out how to use it in time?