Dean Koontz's Nevermore #2

At what point does one draw a line in the sand? As the threat of the alien race known as The Hydra intensifies, Bobby Godric's cross-time quest pushes both his undying love for his deceased wife Nora, and his relentless determination to bring her back into his life, far past the breaking point of human endurance. Can Team Nevermore save Bobby from destroying himself? Or will Bobby find hope somewhere among the infinite continuum of Earths?