1 - Sarah has gone into a crouch and is hiding her eyes as if to hide. Greg is straight up gone - although his ghost briefcase and its contents are still there. That said, there's no one else visible in the panel - the shouting is coming from a different room (and is visible as such by the word balloon tail).
OFF-PANEL SHOUT: Yes, you!
2 - Sarah opens her eyes, realizing the voice isn't as near as it may have initially seemed. Greg floats out from a wall / floor, his head visible as he peaks out from his hiding spot. The shouting continues.
OFF-PANEL SHOUT: Stop what you're doing!
3 - Sarah moves quietly towards the doorway where the shouting is coming from. Greg is busy picking up his things.
4 - In the next room of the Pawn-Porium. The focus of the scene is a handful of cloaked figures who are being harangued by two huge clockwork goat-headed beings. It does not look like a fair fight. In the background, Sarah peaks over a balcony / doorway to look down on the scene.
GOAT CREATURE: Breaking and entering is a serious crime and you will be duly punished for your misdeeds!
5 - Sarah looks back at a nervous Greg (who has caught up after gathering his things). Greg looks worried; Sarah sheepish / apologetic.
SARAH: Okay, maybe security has gotten a little better.