The Crouching Beast is a 1928 spy thriller novel by the British author Valentine Williams.Reilly p.1495 It is part of his series of novels and short stories featuring the character of "Clubfoot", the alias of Doctor Adolph Grunt a brilliant but sinister German secret service mastermind.Burton p.420 It is set in Constantinople, capital of the Ottoman Empire, during the First World War.
Film adaptation In 1935 it was adapted into a British film of the same title directed by Victor Hanbury and starring Fritz Kortner, Wynne Gibson and Andrews Engelmann.Goble p.503
References
Bibliography Burton, Alan. Historical Dictionary of British Spy Fiction. Rowman & Littlefield, 2016. Goble, Alan. The Complete Index to Literary Sources in Film. Walter de Gruyter, 1999. Reilly, John M. Twentieth Century Crime & Mystery Writers. Springer, 2015.