They're wrapped twice over; don't be so juvenile.

...Though I'm depending on exactly that reaction to hide the compartment, of course.

[Susan will reach for the poker now and thrust it into the back of the closet, poking at... something. It gives way eventually and a portion of the back of the closet opens up seamlessly - like a second door.]

There. Investigate to your heart's content.

((I am totally making this up on the spot so let me know if any of this isn't OK.))