There's no way this could be for the wardrobe in the parlor, the key feels like a perfect match for the lock in the garden.
Holding the key tight in your hand, you run down the attic stairs, down the spiral staircase, through the parlor, through the library, and back out into the garden.
Panting, you trot up to the tall wooden gate at the edge of the garden. It's almost sunrise now, and you've had enough of this midnight adventure.
Without wasting any time, you fit the silver key into the silver lock. Success!
With a squeaky creek, the gate swings open, and just as you step out onto the sidewalk, your brother skates up to you.
"Hey! I was just about to come and find you," he says.