Continuity mistake: Kasper Gutman goes wild cutting the Maltese Falcon continuously with his knife, but in one of the inserted close-ups of him he's just standing there not doing anything. (01:28:40)
Continuity mistake: Johnnie, Lina and Beaky are playing anagrams. Lina spells out the word MURDER with an M as the first letter. The shot cuts away and then back again, and now the first letter is an inverted W. (01:01:40)