Continuity mistake: When Quinlan is with Joe Grandi at the bar, Quinlan breaks his sobriety while seated at a round table, but in the last overhead shot the table is rectangular. (00:57:00 - 00:58:25)
Continuity mistake: When Scottie (James Stewart) visits a bookshop to question its owner, the book display in the shop's window changes between the time he enters and exits the store. (00:33:50)