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
In what year did Hedy Lamarr appear in The Trunks of Mr. O.F. starring Walter Abel and Peter Lorre?
The Trunks of Mr. O.F. with Hedy Lamarr was released in 1931

Question: What other films was she in?
Self-contained rewrite: What other films was Hedy Lamarr in besides The Trunks of Mr. O.F.?