In the Dakota Territory, a U.S. Marshal haunted by his past works desperately to discover who is behind a weaponized smallpox plague and stop an incipient Sioux uprising.
A Serbian policeman, at war with terrorists as well as his conflicting loyalties, races against the clock in Sarajevo to stop the terrorists intent on setting off World War I.
A gifted New Orleans paramedic finds himself embroiled in the bloody drug cartel wars on the U.S./Mexico border, battling a new kind of plague he does not understand.
All three men have two things in common: the archangel that resides in their heads, and the fallen angel they’re pursuing.
It’s a battle as old as time, with the fate of mankind hanging in the balance.