Matt Helm - the Retaliators
Donald Hamilton
Matt Helm (1)
The Silencers
Matt Helm (4)
The Retaliators
Matt Helm (17)
Murder Twice Told
The Devastators
Matt Helm (9)
The Betrayers
Matt Helm (10)
The Removers
Matt Helm (3)
The Interlopers
Matt Helm (12)
The Poisoners
Matt Helm (13)
The Intimidators
Matt Helm (15)
Matt Helm - the Demolishers
The Intriguers
Matt Helm (14)
The Frighteners
Matt Helm (25)
Death of a Citizen
The Ravagers
Matt Helm (8)
Texas Fever
The Threateners
Matt Helm (26)
Matt Helm - the Betrayers
The Infiltrators
Matt Helm (21)
Matt Helm - the Intimidators
The Annihilators
Matt Helm (20)
The Big Country
The Revengers
Matt Helm (19)
Assassins Have Starry Eyes
The Terminators
Matt Helm (16)
The Terrorizers
Matt Helm (18)
Matt Helm - the Devastators
The Vanishers
Matt Helm (23)
The Detonators
Matt Helm (22)