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Film · Cast

Full cast

The Unknown Quantity

On screen

Cast

6 credited performers

Corinne Griffith portrait

Corinne Griffith

Mary Boyne

Huntley Gordon portrait

Huntley Gordon

Dan Kinsolving

Harry Davenport portrait

Harry Davenport

Septimus Kinsolving

Jack McLean portrait

Jack McLean

Sammy Boyne

Artwork unavailable

Jack Ridgeway

Thomas Boyne

Artwork unavailable

F.R. Buckley

Peter Kenwitz