Dr. Priestley's Quest is a 1926 detective novel by John Rhode, the pen name of the British writer Cecil Street.

[3] In its relationship between Priestley and his secretary and future son-in-law Harold Merefield is shown the influence of Conan Doyle's Sherlock Holmes and Watson.

Austin Heatherdale is killed on a lonely in what appears to be a casual robbery.

However his brother Gerald demonstrates to Priestley that he believes the attack was pre-meditated and fears for his own safety.

When he also then dies Priestley sets out to solve the murders of the Heatherdale brothers using pure logic.