With any luck a breaker box somewhere.

[ He is enjoying the excuse to poke around, even if he's being sneaky about it. But he'd like having the lights on even more. ]

And maybe some secrets we're not supposed to find.

[ He grins and starts heading for the far side of the basement, where his flashlight hasn't managed to illuminate. Something catches his eye along the back wall. ]

Does this look like a door to you?