Continuity mistake: As the old man sits sketching Joanna's face it changes between shots, from a nearly full face to just half. (00:33:00 - 00:33:30)
Revealing mistake: Walter and Joanne have two little girls at the beginning of the film, but then much later, there are suddenly two young boys seated at the table during breakfast. (01:17:00)
Continuity mistake: At the very beginning when they are all getting into the yellow Ford car an outside of car camera cut from the front of the car to the side shows the lady's arm firstly inside, then rested on the door.
