Donald Hamilton

The Revengers, published in 1982, is a novel in the long-running secret agent series Matt Helm by Donald Hamilton. It was the first Helm book published since 1977 and the nineteenth book published overall since 1960. This book was seen as a reintroduction of the character after a five-year hiatus, including multiple …

The Removers is a spy novel by Donald Hamilton first published in 1961. It was the third novel featuring Hamilton's creation, counter-agent and assassin Matt Helm.

The Intriguers, first published in 1972, was the fourteenth novel in the Matt Helm spy series by Donald Hamilton.

The Interlopers, first published in 1969, was the twelfth novel in the Matt Helm spy series by Donald Hamilton, which began in 1960. It represents a middle period in the Helm novels, being about 80,000 words in length, somewhat longer than the first four or five in the series, but considerably shorter than most of the …

The Infiltrators was the twenty-first novel in the spy series Matt Helm by Donald Hamilton. It was first published in 1984.