Highlights
The Unknown Quantity

The Unknown Quantity (1919) Credits - Full Cast and Crew

1919Movie

Cast

C
Corinne Griffith
as Mary Boyne
H
Huntley Gordon
as Dan Kinsolving
H
Harry Davenport
as Septimus Kinsolving
J
Jack McLean
as Sammy Boyne
J
Jack Ridgeway
as Thomas Boyne
F
F.R. Buckley
as Peter Kenwitz

Crew

T
Thomas R. Mills
Director
G
G. Marion Burton
Writer
O
O. Henry
Story