My Lady's Garter is a lost[2] 1920 American silent mystery film directed by Maurice Tourneur and starring Wyndham Standing, Sylvia Breamer and Holmes Herbert.

[3] As described in a film magazine,[4] a jeweled garter with an interesting history disappears under mysterious circumstances from the British Museum.

Helen Hamilton (Breamer), daughter of a wealthy American, loses her jewels after throwing them out of a window at Keats Gaunt (Craig), a poet she imagines she is in love with.

A tiff with Gaunt follows and she dives into the sea, being rescued by a strange gentleman in a yacht who gives his name as Bruce Calhoun (Standing).

Not even to her, however, will he admit his part in the mysterious proceedings that are occurring continuously until, by a master stroke, he catches the criminal, a rival for Helen's affections, and then reveals that he is an American secret service man and worthy of her love.