You go to open the door, but it's locked. Jiggling the doorknob gives no result.

You fish the skeleton keys out of your pocket.

Try the shiny silver key.

Nothing happens. The door remains locked.

Try the heavy black key.

You turn the key in the lock and hear it click. The door swings open.

Looking to your right, you see another doorway down the hall.

Go back to the concierge desk.

locked door