Revealing mistake: After Ethel has died and Brenda is crying over her, there is a slight twitch in Ethel's eyes.
Continuity mistake: When Bobby's watch turns 11 pm, he goes outside. His injury on his face is on his right side, but when he starts to go out into the desert, the next close-up of him, he is wounded on the left side of his face. Then, in the next shot of him after running and tripping, the wound is back on his right side. It is obvious the shot was reversed.