keep it locked away (open)

It was a nice clear evening after the first day of classes, so Zuriel climbed to the top floor to go to the Starlight Study room. As anticipated, there were a lot of other students who had the same idea: all the good chairs and loungers were already taken up. Zuriel managed to get a spot in the corner where he could still see the stars of the night's sky, so he was more or less content with that.

For one of his charms projects he was to perfect the anti-unlocking enchantment, which would be very handy when it came to everyday life. He opened his book from where he left off, and began to read the part about probable backfiring.