.. Disabling the chest protection spell

Have you talked to the other inhabitants of the room?

Did you get the hat, already?

Talk to the fish, of course! ( Switch to the raccoon form. )

Dezi said the mirror ought to know the spell used to protect the chest.

You just need to get past the security channel.

Ask the mirror to play back records.

Say to the mirror: Chest, Wine

The spell goes like this: Chesty Besty, out you Pesky. Begone!

Now you need just to distract Archie.