Ghosts of Hiroshima

"Gabriel is now convinced that the men searching for the secrets of his former mentor's experiments are no men at all. They are demons hellbent on getting their hands (if that is the right word for them) on what they believe could indeed be an escape from Hell. And while Gabriel's quest takes him from the city of Los Angeles to the forests of San Francisco, there is no escape from the shadow of the damned that reaches out for him. And all those who try to help him!"