Both demigod returned with huge piles of books and dove in. By the time the other students were set to arrive, the pair had found out a few of the things they needed to know. During his 5th year many students were injured and one killed when an unknown monster was released into the school. Apparently Tom Marvolo Riddle Jnr found who released the creature, and that it was some sort of spider, to which he was awarded a Special Services to the School Award and Rubeus Hagrid was expelled.

Of course, both knew that it wasn't Hagrid or a bloody spider, but it wasn't until Alexander dug through an extremely old text that he found what it was that they were going to be dealing with. A Basilisk, one of the deadliest magical serpents. Borrowing out both books, the pair ran full pelt to where Severus was, able to track him down.

"Se- Professor Snape, we need to talk," Lex almost slipped, not noticing until the last minute that he was in the company of Tonks and another woman.

"Harry, Hermione, this is Madam Bones, she is the Head of the Magical Law Enforcement Department," Severus said politely, "Please excuse me ladies."

Both knew something was up but didn't stop the trio from leaving. As soon as they were in an abandoned classroom, the pair started, "Look, it has been let loose before, when Voldemort was in 5th year. That's how Hagrid was expelled."

"What's more is that Dumbledore knows all of this, look at that, he was a teacher here," Lex pointed at the moving photo of a younger headmaster.

"And even worse is that we know what the creature is, and it's really bad"

Lex flipped open the text, "That's what killed that girl back then and has been set free once more."

Severus looked at the diagram and went pale, "A Basilisk? Bloody hell. Come on, we can't let students return to the school until it is dead."

The man grabbed his wards and took them back to where the women were standing. Amelia Bones saw the fear on Severus' face, "What's wrong?"

"It would seem that this is worse than first thought. The creature that did this has killed before, and it is somehow being controlled by the Dark Lord or someone who works for him," Severus showed the Aurors the history article first, "I would demand information from the headmaster as to why he hasn't said anything and also this is the creature that is lurking this castle."

At seeing the suspected creature, both women gasped, Tonks' hair going pure white. Amelia allowed herself a moment of composure before saying, "We must close the school."

"Wait!" Hermione said suddenly, all eyes on her, "You don't need to close it, all that will do is alert whoever is working for Voldemort that we are onto him or her. The ways to kill the snake are right here, and as it will be in the castle somewhere, all we really need to do is deafen everyone for a while, easily fixed. If you don't want that, we could always ask where the entrance for the chamber is and create the rooster crows closer to the beast."

"And who would we ask?"

"The only person who has seen it," Hermione flipped through the history book and pointed to the photo, "Her ghost was chained to her dying place after haunting a bully so badly that the bully got the Ministry involved. She's in this castle at this very moment."

Every set of eyes looked at the memoriam picture of Myrtle and the two women groaned out, "Moaning Myrtle? Wonderful."

"Tonks, get every Auror here now and brief them," Amelia ordered, "Severus, get together 4 other professors and make sure that the others watch over the students. I want them all locked down in the Great Hall until further notice."

Severus nodded and was about to take the demigods off when Lex said something that stopped the adults cold, "How are you going to access Slytherin's chamber? He was a Parselmouth, an exceptional talent that only a rare few would ever possess and therefore an excellent way to keep all those he would deem unfit from getting inside. Can any of you speak Parseltongue?"

The potions master swore viciously, not caring that the kids were present, "Amelia, you have to take Harry and therefore you have to take Hermione; he's the only Parselmouth around who isn't the Dark Lord. But I swear, you do anything other than get us inside and I will personally make sure neither of you can sit for a month."

"Right"

The Auror nodded, surprised in seeing her former schoolmate caring so much for the pair, before heading towards the bathroom with the young pair, Severus rushing to get his colleagues.. Inside, she waited by the door while the demigods went in search of Myrtle, "Hello? Myrtle are you in here?"

"Yes," a blubbering reply came from the end stall.

When the pair opened it, they spotted the ghost of a girl only a few years older than they were when she died, she was sitting on the cistern, ghostly tears coming from her eyes, "Are you okay?"

"What do you care? Going to throw something else at me?" That was when Myrtle realised there was a boy there, "Hey! This is the girls' bathroom, you can't be in here!"

"Myrtle, he's in here to help the Aurors and professors find the monster who killed you," Hermione said softly, "Can you help us? We'd really like to know how it is you died."

That seemed to cheer the ghost up, as she forgot about Lex's presence and floated towards another stall, "I was sitting in here, Olive Hornby had been teasing me about my glasses and I came in here to hide and cry. Then I heard a boy, he was whispering and talking in an odd language, one I'd never heard before. I opened my stall door and was going to yell at him when I saw these yellow eyes and everything went black. Next thing I remember is waking up here as a ghost."

"I'm really sorry that happened to you Myrtle, no one should die that young," Lex said truthfully, "I was wondering, do you happen to know where he was talking towards? It will help."

"The taps, I don't know which one though," the ghost then came in closer to the pair, "Can you do me a favour?"

Considering the help that they had been given, neither demigod had a problem with it, "Of course, what is it?"

"Someone threw a diary through me today, made me feel awful, worse than any other time it has happened. Can you find the owner and tell them off, or at least tell me so I can haunt them?"

The pair laughed and nodded, "Of course, where's the diary?"

Myrtle showed them to it, and they recognise it instantly, "That's Ginny's, I wonder why she would toss it away?"

Alexander didn't know but he did know he was getting as headache near it, "Just put it somewhere safe so we can give it to Severus after we're done."

The witch did so and then gently ran her fingers through Lex's hair, soothing the ache that was there. It was only a few minutes later that Professors McGonagall, Flitwick, Sprout, Grubbly-Plank, Severus, and the remaining Aurors arrived, so both kids looked at the taps, Hermione being the one that found the serpents, "Over here."

Before speaking Lex looked at the adults, "I'd be ready with that crowing, it probably already knows."

Even those wary at taking orders from a kid had their wands at the ready. Lex took a step back, laced fingers with his friend, and said with great authority, "Open."