Bluefeather (1928)
Death's Eye (1929)
     aka The Shadow and the Stone
Camouflage (1930)
     aka The Mystery At Newton Ferry
Storm Against the Wall (1931)
Consummate Rose (1931)
Paid in Full (1933)
     aka So Many Doors
Watch the Wall (1933)
     aka The Gentlemen Go By
Inside Out!: or, Mad As a Hatter! (1934) (writing as Geoffrey Ludlow)
Odds On Bluefeather (1935)
The Dividing Air (1935) (writing as Robert Eton)
Third Time Unlucky (1935)
On the Night of the 18th (1936)
Women Had to Do It (1936) (writing as Geoffrey Ludlow)
The Door in the Wall (1937)
The Dandy (1938)
The House in the Hills (1938)
The Hut (1938)
And Be a Villain (1939)
His Aunt Came Late (1939)
The Man Who Escaped (1940) (writing as Sidney Bedford)
The Dark Square (1941)
The Creaking Chair (1941)
The Journey (1944) (writing as Robert Eton)
The Echo in the Cave (1946)
Strange Landing (1946)
The Evil Hour (1947)
The Legacy (1947) (writing as Robert Eton)
St. Lynn's Advertiser (1947) (writing as Robert Eton)
The Bright Face Of Danger (1948)
The Lady On Platform One (1950)
Party of Eight (1950)
The Man No One Knew (1951)
Young Master Carver: A Boy in the Reign of Edward III (1952)
Policeman in the Family (1953)
Bridge Under the Water (1954)
Give Me the Knife (1954)
Under the Hollies (1954)
Where Is She Now? (1955)
Elizabeth: Young Policewoman (1955) (writing as Valerie Baxter)
Saturday Out (1956)
Breaking Point (1957)
     aka The Great Armored Car Swindle
Sonia Back Stage (1957)
Farm Animals (1958)
The Young Architect (1958)
District Nurse Carter (1958)
Jane: Young Author (1958) (writing as Valerie Baxter)
Monica Anson: Travel Agent (1959)
Abandoned Doll (1960)
The House in Marsh Road (1960)
Bandaberry (1960)
The Pit in the Garden (1961)
Moon over Ebury Square (1962)
Virgin Luck (1963)
The Dancers in the Reeds (1963)
Good Luck, Nurse Ross (1963)
Sleep of the Unjust (1963)
More Deadly Than the Male (1964)
Scoop (1964)
Break for Summer (1965)
Double Fault (1965)
The Empty Saddle (1965)
The Imperfect Aunt (1966)
Shadow in the Sun (1966)
The Suspect Scientist (1966)
Die By the Book (1966)
The Mauve Front Door (1967)
Week-End in the Scampi Belt (1967)
Bessie Scudd: Fifty Years of a Woman's Life (1968)
Death of a Philanderer (1968)
Peter and the Picture Thief (1969)
Of Malicious Intent (1969)
Jimmy and the Election (1970)
The Shelter (1970)
Curious Crime of Miss Julia Blossom (1970)
Beginning of Words (1970)
Troy Trotter and the Kitten (1971)
A Little Matter of Arson (1972)
End of the Long Hot Summer (1972)
View from the Terrace (1972)
Fortunate Miss East (1973)
The Fatal Flaw (1973)
One Step from Murder (1974)
Great Cup-tie (1974)
Woman in Number Five (1974)
Burlington Square (1975)
Footpath (1975)
Folly of Henrietta Dale (1976)
Vision Splendid (1976)
Folly to be Wise (1977)
Little Kingdom (1977)
Dangerous Year (1978)
The Sisters (1979)
Lady Who Wasn't (1980)
Parasol in the Park (1981)
Blue Door (1982)
Secret of the Pit (1982)
The Visitor (1983)
False Gods (1984)
Quenell's (1985)
Abiding Thing (1986)
The Rivals (1987)
The Witness for the Defence (2002)