"Courtland Gentry is a good man. But he's a great assassin...To those who lurk in the shadows, he's known as the Gray Man. He is a legend in the covert realm, moving silently from job to job, accomplishing the impossible and then fading away. And he always hits his target. Always. But there are forces more lethal than Gentry in the world. Forces like money. And power. And there are men who hold these as the only currency worth fighting for. And in their eyes, Gentry has just outlived his usefulness. But Court Gentry is going to prove that, for him, there's no gray area between killing for a living and killing to stay alive...."--p.[4] of cover.

Castor's fellow exorcist John Gittings made several calls asking for help before his untimely demise, and if Castor had answered them, his friend might still be alive. So when a smooth-talking lawyer comes out of nowhere to claim the corpse, Castor owes it to John's unhappy ghost and even more miserable widow to help out. But life is rarely that simply for Felix Castor.--From publisher's description.