THE WOLF DOG  
 
Frank Courtney (Frankie Darro) is the heir to great wealth, but his guardian Norman Bryan secretly plots to do the boy in and steal the inheritance. Only Frank's friend, radio operator Bob Whitlock (George J. Lewis), and Frank's wolf-dog (Rin Tin Tin Jr.) stand between him and disaster. A rare cliffhanger , this serial was reconstructed using all available surviving film elements.
 
Serial / Animal Adventure

Cast:

Frankie Darro as Frank Courtney, heir to a shipping line
Rin Tin Tin, Jr. as Pal, Frank's dog
Boots Mallory as Irene Blane, who is really Frank's cousin Irene Courtney
George J. Lewis as Bob Whitlock, radio operator
Henry B. Walthall as Jim Courtney
Hale Hamilton as Norman Bryan, villainous current President of the shipping line
Fred Kohler as Joe Stevens
Donald Reed as Swanson
Gordon De Main as Murphy
Stanley Blystone as Lang
Tom London as Brooks

Chapter titles

1.The Call of the Wilderness

2. The Shadow of a Crime

3.The Fugitive

4.A Dead Man's Hand

5.Wolf Pack Law

6.The Gates of Mercy

7.The Empty Room

8.Avenging Fangs

9.Wizard of the Wireless

10.Accused

11.The Broken Record

12. Danger Lights