About this scene
Hotel reception, small boutique property, mid-afternoon. He's standing at the desk filling out a check-in form. She's behind the counter, mid-forties, blouse buttoned, hair tied back. Her right hand goes out of frame as she pretends to type. It does not come back up for a long time. The chair audio gives it away. Three separate times during the check-in conversation the chair shifts and her breathing pattern catches up half a beat later. He hands the pen back and she takes it with the wrong hand.
What to watch for
The chair is the audio cue you have to listen for. It creaks each time she repositions, and the repositioning correlates exactly with the rhythm changes in her breathing. She maintains a perfectly normal customer-service voice the entire time. Watch her left hand on the counter. The fingers tap once, then go still, then tap again. Her right hand is the one doing the work and it never appears in frame. The check-in conversation runs three minutes. She finishes whatever she was doing at about the two-minute mark.