When Cassie enters the house for the first time, she unlocks the door, and leaves the key in the lock while she retrieves her two suitcases one at a time. The next shot showing Cassie going through the door from the inside with the second suitcase then closing the door, shows the key in her hand with the second suitcase, while she is never seen taking the key out of the lock in the door.
When BIG MIKE is first seen behind the bar, his cigar is very long. When he goes to wake up Buzzy Sheridan, the cigar is about half its previous length.
When Val says, "twenty years ago, this man was at the height of his career", he mispronounces the word 'height' by using the 'th' sound as is pronounced in 'width'.
When Connie Stevens first enters her father's house, the shadow of the camera can be seen to her left on the wall.
The boom mic is visible in at least two house interior shots. One is where Melinda is showing the new housekeeper Ramona around. They look in a room and walk back and a clear, dark shadow of the boom microphone is visible upper right of the frame.
Connie Stevens' character opens the front door of her father's home and leaves the keys in the door. She screams after being frightened by a prank, and Dean Jones' character runs to her aid, but he too leaves the keys in the door.
When serving breakfast to Cassie the first morning in the Duquesne house, Val picks up a cast iron skillet from the stove with his bare left hand but uses a pot holder to lift a coffee pot with his right hand which has a black plastic handle.