Voices re-introduces the Dark Earth setting by Jason Halstead, many years after the initial novel of the same name.
Billy Paquard is an ex-Army grunt with an angry angel on his shoulder. When he's captured and tortured by an unknown agency the voices in his head are the least of his concerns. The key to survival may also be the key to redemption.
The voice helps him dig deep into his past, to a life repressed and almost forgotten. Only when he's looked back on what could have been can he decide what the future might be.
Look for these other Dark Earth books:
Dark Earth
Devil's Icebox
Soul Mates
Voices
Bound
also The Lost Girls series