Dead Wrong, by Richard Phillips

This is a sequel to Mr. Phillip's enjoyable "Once Dead." In the first book, our hero, Gregory, is an ex-CIA agent who was saved by an alien force that goes on to inhabit his mind. In this one, Jack has to rescue an prisoner in South America and prevent an ancient alien artifact from falling into the wrong hands (which is to say anyone's hands). Meanwhile a bunch of folks want him dead.

This is all good fun and an interesting story.

Dead Wrong (The Rho Agenda Inception)