Sirius Black entered the Gryffindor common room with his best friends, Remus Lupin and James Potter. He glanced around and saw his younger sister, Cass, writing something. He smiled mischievously, the smile that was constantly on his and Cass's face. He snuck up behind her and grabbed her from behind. She only said "Hi, Sirius. Hey Moony and James. Sit down." Sirius groaned. "How'd ya know it was me?" "Mirror." she said holding up a compact mirror.

They joined her and Remus and James started a chess game. Sirius studied his little sister. At 14, she was one of the prettiest girls. But she was confusing, at least to him. She wouldn't put up with him or James teasing anyone. But when she wasn't around, that was a different story. She was just as much trouble as him, caused just as many pranks. He considered her one of them, one of the Marauders. She didn't have quite as many detentions as him because she didn't get caught nearly as much, and when she did, she had a story ready.

She glanced at him "Take a picture, it'll last longer," she told him. He stuck his tongue out at her and she stuck hers out right back.

That night, the five of them snuck out and started hunting. Sirius always sent her back to bed after an hour of searching, so she would be more rested. Everyone left early that night. Cass cried, "I found it! I found it!"

They ran over, she was pointing to a potion. "It'll be ready on New Years. Takes two months." She tucked the page into her robes and they headed back to bed and went to sleep.

They started working tirelessly on the potion. They would stop planning pranks during their free periods and would check on the potion. On weekends they'd spend almost all their time in the boys dorm where the potion was.

One day, Cass had clearly lost track of time cause she wasn't in the dorm with the potion like she usually was. She was in the common room, kissing a boy. Sirius scowled and ran over and pulled them apart. The boy ran off.

"SIRIUS ORION BLACK! WHAT IS YOUR PROBLEM!?" she screamed at him.

"My "problem" dear, *Cassiopeia.* is that you are kissing a boy you barely know!"

"BARELY KNOW!? I HAPPEN TO KNOW BOBBY AS WELL AS YOU KNOW JAMES AND MOONY! I SIT WITH HIM IN CLASSES AND AT SOME MEALS AND AT QUIDDITCH GAMES!"

He looked shock she had such a good friend he hadn't known about. "That still gives you no reason to kiss him!"

"I CAN KISS WHOMEVER I WANT! YOU CAN'T STOP ME!" she raged. She whirled around and ran upstairs. Lily gave Sirius a dirty look and followed.

The next day was Halloween. Remus and Cass were in the boys room working on the potion as James and Sirius had a Quidditch practice. Cass ended up falling asleep, curled up on the floor. Remus smiled to himself, looking down at his "little sister" as he thought of her. He shook her awake. "Cassie, why don't you go get some sleep?" he offered. She nodded, yawning. She went to her dorm and fell asleep.

Someone snuck in and smiled at her. He tied her up and snuck her out in the dead of the night. No one noticed for two days that she was missing. James, Sirius and Moony thought it was because she was avoiding them. Lily and Bobby thought it was because she was with the Marauders. Only when all of them were at the victory Quidditch party, did they notice she was missing. They ran to Dumbledore who conducted a search of the grounds. She was no where to be found. He had Sirius get apicture of her and he designed a poster.

(You can get the pics of Cass at the following website: