The Sphinx
What was the sinister secret of the man who could speak only with his eyes?
A man known to be a mute is suspected of committing a murder, as he was noticed at the scene. However, witnesses saw and heard him talking as he was leaving the scene of the crime. The police must determine if he is the actual killer or if he is being framed.
Lionel Atwill
Jerome Breen
Sheila Terry
Jerry Crane
Theodore Newton
Jack Burton
Paul Hurst
Detective Terrence Aloysius Hogan
Luis Alberni
Luigi Baccigalupi
Lucien Prival
Jenks, the Butler
Lillian Leighton
Mother Werner
Paul Fix
Dave Werner
George 'Gabby' Hayes
Detective Casey
Theodore Lorch
Dr. Augustus Kelton
Wilfred Lucas
Prosecuting Attorney
Hooper Atchley
Oliver P. Curran
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