Sir Barrera makes his way through the inner courtyard door and heads for a private shower. He takes his gun into his hand and hides it under the soiled jacket he’s carrying over his arm. He wouldn’t want a trip to the laundry to be the reason he’s slow on the draw.

He heads towards the basement. 

[b]Green:[/b]

The safe opens. Its contents are… house keys. Piles of sorted house keys with a variety of keyrings and fobs. Well, maybe not house keys - you’d have to find the locks that these open first, to know if they’re for houses or not, but-

There’s a sound in the next room, the staircase. Someone’s coming down. Freeze. This room is just like the attic staircase again, but with the safe there’s nowhere to go. Hiding in the safe itself is a death trap, it’s-

The door to the wine cellar starts to open. Freeze. Don’t move. Go absolutely still. Even if you can’t hide, you can at least not draw attention to yourself. If someone is just here for wine, then they’re not going to think to look for you. Even in plain sight, sometimes people just miss what they’re not looking for.

A twelve year old boy slips inside with a finger held tight to his lips, and presses the door shut against his back. He taps his wrist where a watch would be, and then three fingers. 

In the next room, the shower water starts running. Barrera’s footsteps were so quiet you would’t have heard them. Sound dampening shoes, maybe? Or just the mud on them. 

The twelve year old keeps his back to the door with his arms folded across his chest, immobile and immeasurably bored, as the shower water keeps running. 

He must have already been hiding in the basement when you got down here, or else you’d definitely have heard the stairs activate. Why didn’t you see him in your search? 
[“I don’t know” is a valid answer here. This is just a guarantee that this beat won’t end up making Green look incompetent. You can declare something as true about Juan or of any of the rooms for this.]