Sergeant Blake of the Northwest Mounted Police is sent to the border to break up a ring of smugglers who are bringing illegal Chinese immigrants into Canada. The ring is led by Ah Ming, a "half-breed" who goes by the name of Dr. Lawler. When Blake encounters Lawler, he is experimenting on a white mouse.

Genres

Cast

Lewis Stone

Sgt. Blake, R.C.M.P.

Wallace Beery

Dr. Lawler

Ethel Grey Terry

Erimine Reeves

Willard Louis

Sing Lu

Margaret McWade

The Mother

Pomeroy Cannon

Anna May Wong