Boat building father and son join the river patrol service and get caught-up in a spy ring.

---

Main Cast: Tom Gamble, Edward Rigby, Jean Gillie, Michael Wilding, Marion Gerth, Mavis Villiers, John Salew, Henry B. Longhurst, G.H. Mulcaster, Dennis Wyndham

Director: Oswald Mitchell

Writers: Oswald Mitchell, W.W. Jacobs

Editor:

Cinematographer:

---

Popular Double Features