Johnny Lynn is a brilliant historian, but a lonely man. Ever since his wife died six years ago, he's buried himself in his work, especially his research into the Davies, a prominent family in Key West in the early 1900s. Once a year he allows himself a brief vacation in which to remember and mourn his wife, but his life takes an incredible turn when he discovers a hidden cave with the eerie power to transport him back in time to the year 1915. Beset with amnesia but having inexplicable glimpses of the future, he sets about forging a life for himself alone-until he meets Maggie Davies. What will the past-and the future-have in store for him now?