Shifting Sands is a 1918 American silent drama film directed by Albert Parker and starring Gloria Swanson.
[1] As described in a film magazine,[2] Marcia Grey (Swanson), a struggling artist, is accused of theft by Heinrich Von Holtz, and is sent to Blackwell's Island for ninety days.
Heinrich Von Holtz, now a spy, visits the Stanford home in the guise of an Englishman.
The document proves spurious and Marcia, laughingly defiant, declares she would not betray her country for any price.
John Stanford, who had been compelled to suspect his wife of treachery and infidelity, learns that she has been in the secret service as well as himself.