Detectives: THE BARON by John Creasey

Complete list of mysteries starring John "The Baron" Mannering, reformed jewel thief-turned-antiques dealer and amateur sleuth. Written by John Creasey under the pen name Anthony Morton:

Meet the Baron (1937) aka The Man in the Blue Mask
The Baron Returns (1937) aka The Return of Blue Mask
The Baron Again (1938) aka Salute Blue Mask
The Baron at Bay (1938) aka Blue Mask at Bay
Alias the Baron (1939) aka Alias Blue Mask
The Baron at Large (1939) aka Challenge Blue Mask
Versus the Baron (1940) aka Blue Mask Strikes Again
Call for the Baron (1940) aka Blue Mask Victorious
The Baron Comes Back (1943)
A Case for the Baron (1945)
Reward for the Baron (1945)
Career for the Baron (1946)
The Baron and the Beggar (1947)
Blame the Baron (1948)
A Rope for the Baron (1949)
Books for the Baron (1949)
Cry for the Baron (1950)
Trap the Baron (1950)
Attack the Baron (1951)
Shadow the Baron (1951)
Warn the Baron (1952)
The Baron Goes East (1953)
The Baron in France (1953)
Danger for the Baron (1953)
The Baron Goes Fast (1954)
Nest-Egg for the Baron (1954) aka Deaf, Dumb and Blonde
Help from the Baron (1955)
Hide the Baron (1956)
Frame the Baron (1957) aka The Double Frame
Red Eye for the Baron (1958) aka Blood Red
Black for the Baron (1959) aka If Anything Happens to Hester
Salute for the Baron (1960)
A Branch for the Baron (1961) aka The Baron Branches Out
Bad for the Baron (1962) aka The Baron and the Stolen Legacy
A Sword for the Baron (1963) aka The Baron and the Mogul Swords
The Baron on Board (1964)
The Baron and the Chinese Puzzle (1965)
Sport for the Baron (1966)
Affair for the Baron (1967)
The Baron and the Missing Old Master (1968)
The Baron and the Unfinished Portrait (1969)
Last Laugh for the Baron (1970)
The Baron Goes A-Buying (1971)
The Baron and the Arrogant Artist (1972)
Burgle the Baron (1973)
The Baron, King-Maker (1975)
Love for the Baron (1979)

Related link: Mystery TV Themes: THE BARON (1966)

More detectives:
BERNIE RHODENBARR (Burglar) by Lawrence Block
MELITA PARGETER by Simon Brett
PHILO VANCE by S.S. Van Dine
ALBERT CAMPION by Margery Allingham
FLETCH by Gregory Mcdonald
100 Mystery Series: 1887-2010