The Outer Limits : Always Darkest by Stan Timmons - Paperback Sci Fi

Paul Stein wakes in a prison cell, with no idea why he's been imprisoned, or how he got there.  One thing is made clear to him by the guards, however:  He's scheduled to die in three days' time.

How could this have happened?  What crime could he have possible committed that would condemn him to death?  For Paul, the answers may be found among the secrets of the N'lani, the alien invaders who now rule Earth, or simply by looking in a mirror--for the body Paul Stein inhabits is not his own...

AN ALL-NEW ADVENTURE BY THE CO-AUTHOR OF BATTLESTAR GALACTICA: RESURRECTION