Harbinger — Jack Skillingstead

Six years after a drunk driver kills his mother and brother on Halloween night, Ellis Herrick awakens to find himself changed by a mysterious power. For the next two centuries Ellis pursues answers to the riddle of his immortality, a journey that takes him from the irredeemable past to the far reaches of outer space - and ultimately to the innermost caverns of his wounded psyche. Harbinger is a novel of adventure, evolution, imperishable love, and the shifting nature of personal reality.