Chaos Theory (a.k.a. Unknown Origin) - S9-E1
Visible crew/equipment: While Gallant is running on the sixth floor the boom mic is visible in the window.
Tell Me Where It Hurts - S9-E7
Continuity mistake: In this episode Kovac has a patient who needs eye surgery. While at County General, Kovac says that the patient is 16 years old. Later, when Kovac goes to the golf course to get the doctor who does the surgery, he says the patient is 14.
No Good Deed Goes Unpunished - S9-E13
Character mistake: Dr. Corday finishes assessing a gun shot victim, then goes to the next trauma room to assess another. The steady cam follows her. She makes sure not to contaminate her gloves on the door, opening it with her elbows, but then goes straight to touching the next victim. Of course, in real life, she'd change gloves first. The shot never changes, so there's no chance of her changing gloves off camera. (00:12:30)
A Boy Falling Out of the Sky (a.k.a. Shifts Happen) - S9-E15
Plot hole: Dr. Lewis is talking to a patient about pets, and how she is "banned from a pet store" because she isn't good with pets. She explains that the only pet she ever had was sea monkeys as a child. But, in the earlier seasons, she had a cat. We actually saw the cat at one point when her sister was staying with her and let the cat out of the apartment by accident.
Answer: It was in "Chaos Theory" which is the first episode of season 9 (time code 00:13:55).
Super Grover ★