A global manhunt sweeps up a former federal agent when his childhood friend becomes the chief suspect in a terrorist rampage.

His hazardous stint in U.S. law enforcement behind him, Valentine Pescatore has started over as a private investigator in Buenos Aires. Then he runs into a long-lost friend: Raymond Mercer, a charismatic, troubled singer who has converted to Islam. After a terrorist attack kills hundreds, suspicion falls on Raymond -- and Pescatore.

Angry and bewildered, Pescatore joins forces with Fatima Belhaj, an alluring French agent. They pursue the enigmatic Raymond into a global labyrinth of intrigue. Is he a terrorist, a gangster, a spy? Is his loyalty to Pescatore genuine, or just another lethal scam? From the jungles of South America to the streets of Paris to the battlegrounds of Baghdad, The Convert's Song leads Pescatore on a race to stop a high-stakes campaign of terror.