Conversation so far:
In what films did Hedy Lamarr appear?
After meeting Russian theatre producer Alexis Granowsky, Hedy Lamarr was cast in his film directorial debut, The Trunks of Mr. O.F.
Who else starred in that movie with Hedy Lamarr?
Hedy Lamarr was in The Trunks of Mr. O.F. starring Walter Abel and Peter Lorre

Question: In what year did Lamarr appear in this movie?
Self-contained rewrite: In what year did Hedy Lamarr appear in The Trunks of Mr. O.F. starring Walter Abel and Peter Lorre?