The Unknown (1921)
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- Country of origin
- Not yet available · likely United States (estimated from cast and crew)
Cast
- Richard Talmadge as Dick Talmadge
- Richard Talmadge as The Unknown
- Andrée Tourneur as Sylvia Sweet
- Mark Fenton as Parker Talmadge
- J.W. Early as J. Malcolm Sweet
Crew
- Grover Jones · Director
- Harry M. Fowler · Cinematographer