Killing Machine — Stuart Jaffe

The action-packed series that began with Immortal Killers is back!

Nathan K -- he can hold two souls in his body. If he dies, he loses one yet lives on with the other. As long as he replenishes his second soul, he cannot be killed. Nathan K is immortal.

CAUGHT BETWEEN TWO WORLDS

When a brilliant hacker calling herself Robin Hood steals proof of a corrupt Senator and hides it away, those who will be exposed go on the warpath after her. Nathan K is her only hope to survive the relentless attacks and escape death.

But helping one mortal woman is not Nathan's only problem. Roy, a rogue immortal, is determined to change Nathan's view about helping others. He wants Nathan at his side forever, and that means giving up on the mortal world.

Trying to maintain his freedom from the immortal world while saving a life in the mortal world may prove to be more than Nathan can handle. And it may cost him more than his soul.