The Viaduct Murder is a 1925 mystery detective novel by the British author Ronald Knox.

[1] [2] [3] A stand-alone novel, it was a precursor to his series of five books featured the insurance investigator Miles Bredon, all published during the Golden Age of Detective Fiction.

[4] A body is discovered on the course of a residential golf club on the site of a former country house.

Convinced that it has been thrown off a passing train, and that police are not taking the matter seriously following the coroner's inquest, several of the golfing residents led by Mordaunt Reeves investigate what they believing to be a case of murder.

Reeves, who held a minor role in military intelligence during the First World War, takes on the role of detective and begins to form a variety of solutions to the case, most of which ultimately prove to be false.