Title: Things Unseen

Book: Harry Potter

Pairings: Kall/Thomas, Harry/Sylph, Blaise/Luna, Severus/Remus, Pansy/Hermione, Greg/Neville, Bill/Charlie, Percy/Oliver, Fred/George, Draco/Theodore

Summary: Harry has a twin brother but he is not James' son. How can this be if Lily was only ever with James? Who is this boy's father? The answer to these questions lays within things unseen.

Disclaimer: I own nothing. Harry Potter belongs to J.K. Rowling and I make no profit off of this story. I only own Thomas, Sylph, Kall and the plot.

Warnings: slash, femslash, AU, OOCness, dark Harry, dark Neville, Seer Luna, dark Fred, dark George, dark Percy, dark Oliver, dark Bill, dark Charlie, dark Remus, dark Hermione, evil Dumbledore, Ron bashing, Ginny bashing, evil Ginny, child abuse, mentions of rape, twincest, incest, original characters

"Talking"

'Thinking'

Flashback

"Parseltongue"

"*Harry and Thomas talking to each other in their language*"

"Telepathy"

Chapter 1- The End is Only the Beginning

It was October 31, 1981. The Potter family was sitting in their house in Godric's Hollow. The Potters were a small wizard family of four. Lily and James Potter had two young sons named Harry and Thomas. They were sitting in their living room on this chilly Autumn night, blissfully ignorant of the tragedy that was about to befall them.

No one knows exactly what happened that night. Every one is content to believe the story that the Ministry tells because they are to afraid to believe anything else. They say that Lord Voldemort, the most powerful Dark Lord in over a century, killed the Potters that night. No one knows why but when Voldemort tried to kill the Potter's son, Harry, something went wrong. Instead, Voldemort was destroyed and Harry became the Boy-Who-Lived.

Everyone either forgot or didn't know that the Potters had two sons. Thomas Potter was forgotten because of his brothers fame. Those who knew of his existence forgot his name and he was simply the brother of the Boy-Who-Lived. Two young boys were left on the Dursley's front porch that night, and were found the next morning by Petunia Dursley when she went to bring in the milk.

Harry and Thomas were abused, starved, and treated like slaves. They were forced to do chores if they wanted to eat. For the first several years of their lives the two brothers lived in the cupboard under the stairs. When they grew too big for both of them to stay in there, Harry was given Dudley's second bedroom.

It is now November 14, 1988 and Harry and Thomas are eight years old. The two brothers were currently hiding in the woods across the park on Mongolia Crescent. Their cousin Dudley and his friends had been chasing them and trying to beat them up. They knew where to hide to get away from them and they were faster than the other kids.

Thomas jumped and gave a little squeak when something brushed against his leg. He looked down quickly and was surprised to see a small kitten looking up at him. The kitten was completely white and had a white ribbon tied around its neck. There was a blank metal bar on the kittens ribbon and the twins wondered if it belonged to someone. They had seen plenty of cats at Mrs. Figgs' house, but they didn't recognize this one.

The little cat mewed and the two boys knelt as one to look at the kitten. "Hey there little girl," Harry began. "What's your name?" Thomas finished. The little cat mewed again and rubbed her cheek on Thomas' hand so he started scratching her head.

"My name is Sylph," the twins heard in their heads. They both gave small, startled sounds and looked around franticly. They were confused when they saw no one was there. "Hey why did you stop?" the voice said indignantly.

The two boys looked down at the kitten quickly to see her glaring at Thomas. Thomas reached out hesitantly and started scratching her head again. The kitten closed her eyes and started purring once more.

"What are you?" the boys asked at the same time.

"I am a Mynx," Sylph said. "That's a magical creature that is a cat but can take on the appearance of a human at will."

"There is no such thing," Harry started.

"As magic," Thomas finished.

"Yes there is little wizards and you need not speak to me verbally. Simply think it and I will hear it," Sylph told them.

"Wizards?" the twins thought at the same time.

"A wizard is someone who can do magic," Sylph explained.

The two boys looked at each other and then back to Sylph who was a pile of mush while they pet her. What the cat - Mynx - said would explain the strange things that sometimes happened around the twins. That also explained why their uncle Vernon always called them freaks.

"Why are you," Harry said.

"Talking to us?" Thomas finished.

"Because I wanted to," Sylph said simply.

"We should be getting home," Harry told Sylph.

"Before Uncle Vernon gets mad at us," Thomas continued.

"Hey take me with you. I have no where to go and I can tell you two all about magic," Sylph said to the boys.

They looked at each other for a few moments before nodding. Thomas picked up Sylph and the boys stood up as one. They made their way home and got yelled at for being outside so long and for brining home Sylph.

Aunt Petunia let them keep Sylph but she tried to keep her away from them. It was obvious to the boys that Uncle Vernon had only let them keep Sylph because Aunt Petunia liked her so much. Sylph didn't like Petunia and kept close to the twins at all times. They got punished for that but they couldn't help it. Sylph really liked them and didn't like being away from them.

Sylph kept her promise and told the two brothers about magic. She told them about the Wizarding World and all she knew. Harry and Thomas liked their conversations with Sylph and enjoyed talking with her. She was their first friend and they didn't care that she was a magical creature.

~/~/~

The two boys were currently in the back garden doing their chores. They didn't mind working in the garden, actually, they enjoyed gardening. Harry and Thomas were pulling weeds at separate ends of the garden and working their way to the middle. The chores went faster because there was two of them and it gave them time to talk because they had separate rooms.

Sylph was running around the backyard chasing a butterfly. She normally chased things or just laid in the shade when they worked outside. Sylph suddenly gave a startled mew and the two boys looked toward her quickly. She had abandoned the butterfly and was backing away from a snake that was clearly mad at her.

"Watch where you're going you little fur ball," the snake hissed angrily. "I was sleeping."

"It wasn't Sylph's fault," Thomas said to the snake.

"Yeah she didn't see you in the grass," Harry said.

"Harry, Tom, do you remember those things I said not to tell other people?" Sylph asked the two boys.

They nodded and looked at Sylph confused.

"Yes, why?" they asked at the same time.

"Talking to snakes is now added to that list," Sylph told them.

"Ok," they thought at the same time.

"You can understand me?" the snake asked the two boys surprised.

Harry and Thomas looked back at the snake and nodded. "Yes," they said at the same time.

"What are your names?" the snake asked them.

"Harry/Thomas," they said at the same time again.

"One at a time please I can't understand you," the snake told them.

"Sorry," they chorused.

"I'm Thomas but you can call me Tom," Thomas told the snake.

"My name is Harry and this is Sylph," Harry said.

"I am Kall," the snake said.

"It's nice to meet you," Thomas said politely.

"Hm very polite for someone so young," Kall said to Thomas.

"BOYS GET BACK TO WORK OR YOU WON'T GET ANY FOOD!!" they heard Uncle Vernon shout from the house.

Harry and Thomas stood up and hurried back to where they had been previously. They got back to work on pulling the weeds; knowing that if they didn't then they would get hit and locked in their rooms. Sylph went over to Harry and started tugging on a weed to help him. Kall slithered over to Thomas and wrapped himself around his right forearm so he wouldn't hinder his work.

"Why are you doing this work, Hatchling?" Kall asked Thomas.

"Harry and I have to or we won't get dinner. Our aunt and uncle don't like us because we're wizards," Thomas told Kall.

"That shouldn't matter," Kall said flicking his tongue out at Thomas. "They're your family they shouldn't treat you two like this."

"We're used to it," Thomas said with a shrug. "Besides there's nothing we can do about it."

"I'll protect you, Hatchling. I promise," Kall said to Thomas.

Thomas said nothing and just continued his chores. He wasn't used to the thought of anyone wanting to protect him and it felt strange. Harry and Thomas had to go inside when they were done with the weeding because they still had more chores to do inside. Kall stayed outside under his tree because he was not allowed inside the house. When the two would go outside, Kall would always go to Thomas and coil around either his arm or shoulders.

Four years later on Dudley's birthday, Harry and Thomas got their Hogwarts letters. Their Uncle Vernon took their letters and tore them up. They were punished for getting their letters and Vernon kept their letters from them. Petunia and Vernon moved Thomas into Harry's room but when his next letter came it had the same exact address as Harry's. Harry and Thomas were taken to Diagon Alley a few days before school started by Rubius Hagrid who was the grounds keeper of Hogwarts School of Witchcraft and Wizardry.