Visible crew/equipment: Near the end of the episode when Harry says "there will be a 10 minute recess" a boom mic is visible.
Visible crew/equipment: Look closely when Clair gets up after saying to the kids "I'm glad we had this chat", you can see a tip of a camera on the right.
Night of the Headless Horseman - S3-E11
Visible crew/equipment: When Nate and Dorian fight at the bar they are replaced with obvious stunt doubles with totally different hairstyles.
Visible crew/equipment: When Angela and Tony are in the kitchen near the end, a boom mic is visible briefly near the top left of the frame, by Angela. (00:18:30)