The Girl Engineer

Helen Holmes

Helen

Leo D. Maloney

Tom Walker - Owner of the Hope Mine

George A. Williams

Williams - Owner of the Boss Mine

Rex Downs

Evans - Williams' Foreman

N.Z. Wood

Merkey - President of the Smelter

The Ghost House

⭐ N/A

The Fast Express

⭐ 8.0

The Red Glove

⭐ N/A

At the Mercy of Men

⭐ N/A

Speed Versus Death

⭐ N/A