To greet the team at the entrance of Hogwarts was Dumbledore, in his half moon glasses, with a twinkle in his brilliant blue eyes, and McGonagall, in her emrald green robes, with her dark hair pulled back into a bun.

"Ahh, how nice of you to join us!" Dumbledore greeted, "Ziva! It has been too long!" He said as he spotted Ziva.

Ziva smiled at them, "It has been for too long, Albus. Minerva." She said, walking over to McGonagall.

"Ziva, how nice it is to see you again!" McGonagall put an arm around Ziva, who had a sparkle in her eye, being back at Hogwarts.

Introductions were made and greetings were passed.

The team walked inside, eager to see the inside of the castle. There were gasps and chattering amoung them as they acknowledged the beauty and brilliance of Hogwarts. Ziva how ever, observed silently. It was just how she remember: The chattering of the happy portaits, the floating candles, the sculptures. She sighed happily, embracing the memories of her old school, her old home.

"Where are all the students?" Ziva asked.

"Quidditch, of course... Slytherin and Gryffindor are playing." McGonagall said with a smirk, "No guessing who will win!"

"Gibbs! Can I go down and watch the game!" Ziva jumped.

"No, we have a crime scene to investigate."

Ziva sighed, she was going to argue, but decided against it.

"I'm sure half an hour will not matter." McGonagall said.

"Yeah." Tonks agreed

"No, we need to take a look at the crime scene."

McGonagall gave Ziva a look that said, sorry, I tried.

Ziva smiled, she missed quidditch, back in her day she used to be a seeker, one of the best seekers Hogwarts has ever seen.

"Let me show you to where you will be staying. Once you get there, you can get your invesigating things and head to the crime scene." McGonagall said, she was trying hard to speak in muggle terms.

The team followed Dumbledore and McGonagall to the stait case.

"Be cafefull, the stairs move." Tonks said with a grin. McGee looked panic stuck, but Abby was thrilled.

By the time they made it up to there dorms, next to the proffesors dorms, McGee and Tony were out of breath, having to climb up the stairs.

"Oh, and dinner is at 7 in the great hall." McGonagall added, before leavign the team to be, "I'm sure Tonks and Ziva will be able to help you find your way around." She smiled and closed the door behind them.

"Are you staying?" Gibbs asked Tonks.

"Yep!" She smiled, "I'm acting as a sort of Liason."

"Great." Gibbs mumbled unhappily under his breath.

Tonks chose to ingore him, "So, where did McGonagall say the crime scence was?"

"Uhh, Moaning Myrtle's bathroom... Or something like that." Tony said.

Tonks and Ziva exchanged a worried glance.

"Okay, a few things before we go in... Moaning Myrtle is the ghost in the bathroom, she lives there... Myrtle is very, very, very sensitive and emotional, so, try and be carefull about what you say."

"Yeah, don't upset her." Tonks added.

"Wait! A ghost!" Abby yelled.

"Yeah." Ziva chuckled, and led the team down to Myrtle's bathroom.

"Prehaps we should wait out here..." Jimmy said nervously, as they stood outside the bathroom.

"Actually, maybe you should, just for a moment... So we can talk to Myrtle." Ziva said, looking at Gibbs for approval. He nodded, and her and Tonks walked into the bathroom.

"Who's there?" Myrtle wailed.

"It's me, Tonks and Ziva."
Mytle came zooming out of a toilet cubical. "Oh! I haven't seen you two in so long! I've missed you both! You's were like my only friends!" She cried.

"It's okay." Tonks soothed.

Myrtle looked up, "I know why your here though. It's about that girl, Lyra Dery who got killed, right over there." She said pointing to body of a young girl. Ziva was too caught up with Myrtle to notice the body.

"Yeah, that is right." Ziva said. "Did you know who did it?"

"No! But I did see someone..."

"Who?"

"I don't know! But she was wearing Slytherin robes."

"Did you see anything else, anything at all, hear anything?"

"I heard Lyra scream. When I came out of my cubical to see what was going on, I saw a girl run out of the bathroom and I saw Lyra lying there in a pool of blood. I went over to try and help, but it was too late!" Myrtle let out a sob and Tonks comforted her.

"What did the girl look like?"
"I only saw the back of her." She had long, crazy blac curls, and looked like a 6th year. That's all I know!"

"Thanks Myrtle. You have helped us a lot." Tonks smiled.

"Mrytle, some investigators are going to come in now and look around here, okay?" Ziva said softly, carefullt not to upset Myrtle.

She looked at her suspiciously, "I suppose..."

"Thank you Myrtle." Ziva smiled at went to get the team. She told them what Myrtle had told her.

"Her name is Lyra Dery." Ziva told the team as they approached the young girl, whose throat had been slit, "She is a Hufflepuff and is in her 6th year. Her parents are both navy Leuitenants and will be here tonight."

The team nodded.

"Tony -" Gibbs began.

"Photo. On it."

"McGee -"

"BOLO out on this Slytherin girl."

"Ziva -"

"Bag and tag."

"Tonks -"

"Witness statement." She said, looking very pleased with the fact that she got it right, "Already done, I will get finer details from Mrytle now."

"I will come, I need to put them on the BOLO." McGee said, and they went to talk to Myrtle.

"Your team works very well together, Jethro." Jen commented.

"I know." Gibbs smirked and walked off to the body.

"Mr Palmer. What are your observations?" Ducky asked.

"Well, doctor. There are no bruises on the victims wrists, no cuts or scratches visible on her body, other that her neck, which suggests she did not struggle all with her attacker, and knew and trusted her attacker. Innitial cause of death seams to be blood loss, when her carotid artery was cut."

"Very good." Ducly said, Palmer gave a grin.

"Time of death, Duck?" Gibbs said.

"About 30 hours ago, give of take. I will know more when I get her into Autopsy."

"Hey!" Tonks said walking into the bathroom with McGee, "McGee but out the BOLO, and I just ran into McGonagall... She said there is a forensic lab and an autopsy room down from where we are staying, they just finished it then."

"What! We are doing the entire investigation here?" Abby said, looking up from the notes she was taking.

"Yup."

"Awesome!" She squeled, Gibbs, how ever, did not look quite as excited.

As an hour past, the team had finished examining the crime scene. Abby had found the murder weapon, a small dagger, Gibbs had found a small black note next to Lrya's body that said, '1 mud blood down, 167 to go."

The note sent shivers down Ziva's spine, she was a muggle born.

The team packed up everything, got the body and moved to there dorms.

"Hey, Ziva!" Hermione said, as they walked through the corridors.

"Hermione! Long time no see!"

"I heard you lot were here, I was hoping to run into you."

"Yeah. How are you? How's Ron and Harry?"

"Good, good. Busy with homework and tests!"

Ziva chuckled. "You guys go ahead. I'll catch up." She said to the team, how were standing there awkwardly as students eyes surveyed them curiously. They all looked relived and scurried off.

"Did you know Lyra?"

"No, I had seen her around... She seemed nice, always smiling." Hermione said sadly.

"Do you know anyone who had a grudge against her?"

"No, not really. As I said she seemed pretty nice."

Ziva nodded, "Anyone with a particulat hate for muggle borns? A girl." She added, showing Hermione the note the killer had left.

"'1 mud blood down, 167 to go'" Hermione read out, she felt her stomach turn and she shuddered. "Victriva Lestrange."

"Lestrange? As in Bellatrix's daughter?"

"Yeah... She's a 6th year... Real bitch."

"I can imagine. Have you seen her around lately?"

"No, actually... I will keep an eye out for you."

"Thanks. I should probably get going... I have a volcano load of work to do." Ziva sighed.

"Mountain load, Ziva... Not volcano load." Hermione chuckled.

"What ever! Stupid idioms." She snapped.

Hermione laughed at Ziva, "So, I will see you at dinner?"

"Probably..." She smiled and kissed Hermione on the cheek, "Say hi to Ron and Harry for me!" She said and walked off to her dorm.

"Sorry I took so long." Ziva said walking into the dorm, but soon realized there was no one there. They must be down in the lab that Tonks said was put in. She though, walking down stairs.

The lab looked almost identical to Abby's back home.

"I ran into Hermione -" Ziva started to say, but Tony cut her off.

"How do you know that kid?"

"Hermione? Well, back when I was an auror I did protection stuff for Harry. In his first year at Hogwarts I went to a Christmas party with him and met Hermione and Ron, his best friends." Ziva explained.

"Was that the Christmas thing at the Burrow with about 100 people?" Tonks asked.

"Yeah, that one."

"I remember that!"

"I'm suprised you do, you were so drunk!" Ziva laughed.

Tonks grinned at Ziva.

"Anyway..." Ziva said, when she realized the whole team was looking at her, "Hermione was telling me about this girl called Victrivia Lestrange." Ziva said, and explained to the team about Bellatrix and her daughter, the crazy blood purity thing they had going, and how Victrivia seemed like the perfect candidate for the attacker. "She is in Syltherin, has long black crazy hair, just like her mothers, hates muggleborns, is a 6th year..."

"Yeah. This does seem like the sort of thing my cousin would do..." Tonks said.

"Cousin?" Jen asked.

"Yeah, cousin." Tonks said and explained her family dynamics.

"I'm not sure if it is wise for you to be on this case... Considering one of your famil members is a suspect... Even if you don't talk."

"I will keep it stirctly proffesional, Director." Tonks assured her.

"Okay... But the moment -"

"It gets personal, I will be off the case." Tonks finshed Jen's sentence for her.

Jen nodded.

"We should get every students fingerprints." Tony said.

"Yeah... We will do that tomorrow, during class time, then we can approach Lestrange." Gibbs said.

"Say Gibbs... It's 7 o'clock. Can we please go and eat?" Tony asked, he was hungry.

Gibbs considered it, "Fine, make it quick! We have a lot of work to do!" He said.

"I can't wait to see the great hall!" Abby said excitedly as they made there way to dinner.