Matt Helm is a fictional character created by author <a href="/c/books/credit/241226/Donald-Hamilton/">Donald Hamilton</a>. 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.
• <a href="/c/books/book/475692/death-of-a-citizen/">Death of a Citizen</a> (1960)
• The Wrecking Crew (1960)
• The Removers (1961)
• <a href="/c/books/book/475695/the-silencers/">The Silencers</a> (1962)
• <a href="/c/books/book/475696/murderers-row/">Murderers' Row</a> (1962)
• The Ambushers (1963)
• <a href="/c/books/book/475652/the-shadowers/">The Shadowers</a> (1964)
• The Ravagers (1964)
• The Devastators (1965)
• The Betrayers (1966)
• <a href="/c/books/book/475717/the-menacers/">The Menacers</a> (1968)
• <a href="/c/books/book/475719/the-interlopers-2/">The Interlopers</a> (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)