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OPEN CLASSIC CINEMA · 335

The Sphinx

193364 minUnited States
DramaMystery
Video edition
YouTube
Original language
English
This copy runs
62:23
Subtitles
English

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Synopsis

A witness identifies a businessman as the man he heard speaking near a murder scene. Medical testimony insists that the suspect cannot hear or speak, leaving the case suspended between apparently incompatible facts. Two newspaper reporters pursue the puzzle while further deaths make their investigation increasingly dangerous.

Cast

DirectorsPhil RosenWilfred Lucas

Reception and legacy

The central mystery proved reusable: William Beaudine directed another version as Phantom Killer in 1942. This earlier treatment belongs to the compact mystery productions associated with Monogram in the years before Hollywood's Production Code was strictly enforced.

Sources and availability

General references identify the work and its copy. A reference beside an editorial section is linked to the claims checked in that section.

Wikipedia — film referenceInternet Archive — catalogue recordPublic-domain film catalogue — rights cross-referencePublic-domain film catalogue — rights cross-reference

Work catalogued as public domain in the United States.

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Availability checked on September 10, 2026.

Photograph credit

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