Continuity mistake: During Juan and Agatha's dinner together, the camera circles them, passing behind Juan (where an "invisible" cut occurs) and continuing to move left around the table. Between the two segments, the position of Agatha's hands changes noticeably. (00:11:50)
Continuity mistake: While she talks to Mrs. Gibbons on the stairs, Agatha's paper sack changes its position and appearance several times between shots. (00:16:15)
Continuity mistake: Agatha opens the restroom door form the outside and it opens inside to the left. The inside view of the restroom shows Agatha opening the door to the right.
