If your talking about captains quarters go to the book room and at the end of ROCKHOPPERS JOURNAL there`s the key.
the last key to the the left
you find th key in puffle rescue with black puffles and go for the shadow
just drag the key to the door and click and let go
You can open a key lock on a door knob, or you can open a deadbolt lock on the door itself.
You find it in the book room. It will be at the end of Rockhopper's book.
type in the code in the game pacege
Click and hold the tv then press the down key.
Surely there is a key lock on the door where you can insert the key and open the door.
Key will turn but door won't unlatch to open.
wal-mart
Crowbar
Use the key to open the door.