Oh, and it was a running gag through the movie. Everyone kept saying "Look at the screwy hat!" until Nora finally took it off and shoved it on the night watchman's head!
The wrestling scene was just for fun. It was more about a bookie ring, and the death of a jockey accused of throwing a race. I love old murder mystery movies!
One of the bookies was named "Rainbow Benny" Almost appropriate for this site!