Woken Furies — Richard K. Morgan

In a world where real and virtual are one and the same and the dead can come back to life, Takeshi Kovacs was once a galaxy-hopping Envoy. Now he battles against biomachines gone wild, searches for a centuries-old missing weapons system, and endures the betrayal of people he once trusted. But when his relationship with an imperiled woman pits him against an enemy specially designed to destroy him, he knows it's time to be afraid. After all, the guy sent to kill him is himself: only younger, stronger, and straight out of hell.