Matt Helm is a fictional character created by author Donald Hamilton. He is a U.S. government counter-agent—a man whose primary job is to kill or nullify enemy agents—not a spy or secret agent in the ordinary sense of the term as used in spy thrillers.
• Death of a Citizen (1960)
• The Wrecking Crew (1960)
• The Removers (1961)
• The Silencers (1962)
• Murderers' Row (1962)
• The Ambushers (1963)
• The Shadowers (1964)
• The Ravagers (1964)
• The Devastators (1965)
• The Betrayers (1966)
• The Menacers (1968)
• The Interlopers (1969)
• The Poisoners (1971)
• The Intriguers (1972)
• The Intimidators (1974)
• The Terminators (1975)
• The Retaliators (1976)
• The Terrorizers (1977)
• The Revengers (1982)
• The Annihilators (1983)
• The Infiltrators (1984)
• The Detonators (1985)
• The Vanishers (1986)
• The Demolishers (1987)
• The Frighteners (1989)
• The Threateners (1992)
• The Damagers (1993)