It was probably the creepiest place Lily had ever been. She was crouched over, and it was beginning to get hard to keep the cloak on. However, she pushed through the fear and discomfort and continued down the passageway, wand in front of her.
She could hear the Slytherins, but she couldn't see them. It was too dark, and they were ahead of her, but not by too much. She felt the tunnel going upwards, and breathed a slight sigh of relief. It had to be coming to end. Finally, after what seemed like hours to her, she reached a door, pushed it open, and realized she was in an abandoned house. She looked around and it suddenly it hit her: she was in the Shrieking Shack. She almost let out a gasp, when she heard voices coming from the stairs. It was the Slytherins, and she followed them.
She stepped on the first step, and it creaked loudly, causing all the Slytherins in front of her to whip around. "Crap," she thought.
"What was that?" one of them cried obviously frightened.
She cracked an evil grin. "Oh yeah, I'm invisible," she inwardly told herself. She could totally use this to advantage. She leaned all her weight on her left leg, causing the stair to creak again. She then leaned on her right leg. The Slytherins got a little twitchy and their necks were swiveling from side to side, trying to find the source of the noise. She took a little pleasure in noticing that Snape was very pale-faced and wide-eyed. She looked down at her wand and got another brilliant idea. She touched her throat with the tip of her wand, making her voice very low and raspy. She started moaning and groaning like she was in deep pain. She channeled the time she sprained her wrist after falling off the swings when she was nine. It was very effective. The Slytherins began scrambling around and grabbing each other, terrified. One of them, not able to take the pressure, took off at top speed, past Lily, and ran back down the tunnel. The rest of them followed, Snape the last to disappear into the passage.
Lily snickered. "I'm such a genius," she whispered to herself, and had a very brutal urge to throw her hair behind her shoulder. She refrained from doing so, however, because she still didn't want anyone to see her. Still she laughed, and made a mental note, that when she was telling this story to James, they peed themselves.
Lily continued up the stairs. She wanted to know if what Snape said was true. Out of nowhere came a howl, then a growl, and a harsh bark. This made her jump and squeak in fright. She was frozen for a bit, but kept going after a couple deep breaths.
When she reached the top of the staircase, she saw a bedroom door. From inside, she could hear hooves, snarling, claws scratching the floor, sniffing, and the almost inaudible squeaking of a rat. She held her breath as she pushed the door open.
The scene that met her eyes froze her to her core. There was a werewolf in the room she was standing in, and it was now looking straight at her. She couldn't think about anything but the sharp teeth in the mouth snarling at her. She knew it was looking at her, even though she was invisible. Its nose was twitching wildly, so it could smell her. It roared in her general direction, and the force of it knocked the cloak off, but she did not retrieve it. She was, quite literally, frozen with fear. She couldn't even breathe. Suddenly, it charged.
As her eyes widened and she let out a blood-curdling scream, the biggest, black dog she had ever seen leapt in between her and the werewolf.