Remus had a free period so he slipped down the dungeon steps and began searching. In his pocket was the lock he needed to practice unlocking for his Charms homework. He had a special plan for it and well his prank. He knew most first years would need to gp back to the dorms to drop of books before their athletic hour, and Remus' plan was to place the lock on a set of double doors that lead to the Slytherin Common Room. His plan wasn't to lock the Common Room just the hall needed to get there.

Remus knew that most first years would have a really hard time trying to unlock the lock even if they knew the spell, Alohomora. He would hid in an unused classroom near by and give the firsties a bit of a hard time before actually unlocking the lock. Since Remus had long ago master the spell his aimed was to make the homework as fun as possible.

Arriving at the doors, he pulled them shut and using the clasp that was already on the door he slid the lock into place and closed it. Now he went into the classroom and set up a study area so it would look as if he was simply studying in a quiet place. He laughed as he listened for his first victim.

It seemed like Remus waited for over an hour without one Slytherin firstie coming. He would stick his head out from time to time but nothing. Finally he decided to just practice the spell and move on.

Taking his wand out and with a wave of it, "Alohomora," he order. He heard a click and watched as the lock fell open. He smiled. He walked over and click it closed. He then step back and repeated the process.

"Alohomora," he called and once again a click and the lock dropped open. He began to try and perform the spell from greater distance, so with each successful spell he began to take one step back. One step, two, three, four steps back and each time the spell had the same result, the lock opened. He then increased the distance until he was nearly 20 feet from it. He waved his wand and clearly spoke the spell. The lock gave a shudder but still opened.