Alan Hunter wrote a mind-boggling 46 books featuring George Gently. The television series was loosely based on these books.
The George Gently Series
Gently Does It (1955)
Gently by the Shore (1956)
Gently Down the Stream (1957)
Landed Gently (1957)
Gently Through the Mill (1958)
Gently in the Sun (1959)
Gently with the Painters (1960)
Gently to the Summit (1961)
Gently Go Man (1961)
Gently Where the Roads Go (1962)
Gently Floating (1963)
Gently Sahib (1964)
Gently with the Ladies (1965)
Gently North-West (1967)
Gently Continental (1967)
Gently Coloured (1969)
Gently with the Innocents (1970)
Gently at a Gallop (1971)
Vivienne -- Gently Where She Lay (1972)
Gently French (1973)
Gently in Trees (1974)
Gently with Love (1975)
Gently Where the Birds Are (1976)
Gently Instrumental (1977)
Gently to a Sleep (1978)
The Honfleur Decision - Gently Under Fire (1980)
Gabrielle’s Way - Gently Heartbroken (1981)
Fields of Heather - Gently In The Past (1981)
Gently Between Tides (1982)
Amorous Leander - Gently With Passion (1983)
The Unhung Man (1984)
“Once a Prostitute” (1984)
The Chelsea Ghost (1985)
Goodnight, Sweet Prince (1986)
Strangling Man (1987)
Traitor's End (1988)
Gently with the Millions (1989)
Gently Scandalous (1990)
Gently to a Kill (1991)
Gently Tragic (1992)
Gently in the Glens (1993)
Bomber’s Moon (1994)
Jackpot! (1995)
The Love of Gods (1997)
Over Here (1998)
Gently Mistaken (1999)