Claim: Some parts of the story of Stranger on the Third Floor, a 1940 American film noir directed by Boris Ingster and starring Peter Lorre, John McGuire, and Margaret Tallichet, and featuring Elisha Cook Jr., included Ward (the main protagonist) to have a terrifying dream about his neighbor being murdered, making him under suspicion.
Evidence: Stranger on the Third Floor is a 1940 American film noir directed by Boris Ingster and starring Peter Lorre, John McGuire, and Margaret Tallichet, and featuring Elisha Cook Jr.. Reporter Michael Ward is the key witness in a murder trial. Ward has a terrifying dream in which the neighbor is indeed murdered and he comes under suspicion. A protagonist (from Ancient Greek πρωταγωνιστής, prōtagōnistḗs 'one who plays the first part, chief actor') is the main character of a story.