The Man from Downing Street is a 1922 American silent starring Earle Williams, Charles Hill Mailes, Betty Ross Clark and Boris Karloff.

[1] The screenplay was written by Bradley J. Smollen, based on a screen story by Clyde C. Westover, Lottie Horner and Florine Williams.

[1] Captain Robert Kent (Williams) of the London Secret Service is assigned to Delhi to discover the person responsible for the passing out of government information from the British Commission in India.

To catch the guilty party, Kent confides to the Colonel that he has issued instructions to the London office to send cables to each of the two suspects on two different matters of commercial importance with the idea being that the subsequent leak of information would reveal the guilty party.

The plan works and guilt is attached to Captain Graves (Prior), whom Colonel Wentworth claims has started a rumor on the subject suggested in one of the cables.