While London Sleeps

Rin-Tin-Tin

as

Rinty

Helene Costello

as

Dale Burke

Walter Merrill

as

Thomas Hallard

John Patrick

as

Foster

Otto Matieson

as

London Letter

George Kotsona...

as

The Monk

DeWitt Jennings

as

Inspector Burke

Carl Stockdale

as

Stokes

Les Bates

as

Long Tom