Never, I repeat, NEVER keep the door to your back.
Leaving the door to your back just invites someone come up behind you.
This might leave an opportunity for your target to get away easily if
you fumble your hypnosis... but... well... you can't really stop them
from leaving anyways.
Always keep an eye on your back.

Penned by my hand on the 2nd of Sarapin, in the year 373 AF.