The Clue is a lost[1] 1915 American drama silent film directed by James Neill and Frank Reicher and written by Margaret Turnbull.
The film stars Blanche Sweet, Gertrude Kellar, Edward MacKay, Sessue Hayakawa, Page Peters and Ernest Joy.
To show the jealous Guy that she is indifferent to Boris's attentions, Christine attaches the coin to her lover's watch chain.
To find the killer, Eve hires an investigator, Williams, who discovers the ancient Russian currency next to the body.
Christine destroys the documents on the coastal defense plan and Nogi can die, reassured for having completed his mission.