The Gray Man
Mark Greaney
Gray Man (1)
On Target
Gray Man (2)
Ballistic
Gray Man (3)
Dead Eye
Gray Man (4)
Back Blast
Gray Man (5)
Gunmetal Gray
Gray Man (6)
Agent in Place
Gray Man (7)
Mission Critical
Gray Man (8)
One Minute Out
Gray Man (9)
Relentless
Gray Man (10)
Sierra Six
Gray Man (11)
Burner
Gray Man (12)
The Chaos Agent
Gray Man (13)
Midnight Black
Gray Man (14)