At the beginning of the episode, Jonathan and Jennifer are in bed, her hair is down. When they come out of the bedroom to greet a guest, her hair has been pinned up, without having been seen doing so.
The Harts drive past the same storage elevator twice on the driven home.
There are obvious stunt doubles in the fight on the stairs.
At the end of the episode, Jennifer hands Max a tissue after he sneezes. He says he caught her cold from Freeway. Cold germs don't travel from human to dog to human.
Jennifer leaves a message on Sylvia's home machine that if she gets the message before Jennifer reaches her, to not go home, which makes no sense.
Williams is near the end of the phone book, not close to the middle.