When Jessica turns off the water for her bath she finds a button she's missing on the bottom of the tub. She reaches her left arm into the water to pick it up. Someone is at the door and when Jessica goes to answer it, she dries her right arm with a towel, not her left.
In the last scene a character turns on a TV to catch the final minutes of the Leopards football game. On the screen is footage of a game between Texas A&M and the University of Texas, but the field and the uniforms don't match earlier footage of the Leopards game.
When Jessica enters the shower room, someone puts a bar through the door handle to prevent it opening (an trite old TV mystery trick). Problem is, the door opened outward, so the bar would not have done anything.
When Jessica is interpreting her discussion with Zach's daughter, she incorrectly uses the word 'love' when the word that is signed is 'like'.