Elena has been having disturbing dreams and begins to believe that a new Tomorrow Person called David is trying to contact her through them. But why can't John and Paul hear him? And where is he trapped? Elena and Paul's attempts to find him lead them to a manor house owned by the eminent historian and explorer Sir Henry Themaddon ­ a house that holds many secrets. John travels to the Canary Islands to find answers to his recent problems and uncovers the existence of some ancient relics that purport to be from the ancient lost city of Atlantis. However, they have already been bought, by Sir Henry Themaddon. Who is Themaddon? Why is he so interconnected with the lives of the Tomorrow People and is David a trap being set by an unseen threat...?