Disclaimer: Harry Potter is owned by J.K. Rowling and BioShock is owned by 2K and Irrational Games. I own nothing.

Rapture 1960

It had been over a year since Tenenbaum had taken Harry into her safehouse beneath Olympus Heights. In that year Tenenbaum had yet to determine what it was that made Harry immune to the ADAM effects. She had used a bunch of big scientific words that went right over his head, and in the end decided to just say that something in his DNA remained an anomaly.

Together Tenenbaum and Harry managed to get their hands on a few more plasmids such as Incinerate, Telekinesis, and Winter Blast. However having access to these new plasmids did not permit Harry being able to leave the safe house as Tenenbaum stated that the city's inhabitants would most likely kill him if given the chance, and if he ever was to leave he was to have a shortwave radio on his person at all times. Said radio was tuned to one in Tenenbaum's office so he could always contact her. She made a special point to state that the Medical Pavilion and Fort Frolic were strictly off limits due to the inhabitants.

A few things Harry learned while living with Tenenbaum was that she was a very direct person. She would answer all his questions honestly no matter how horrible the answer was, and if she didn't give a direct answer she would have him to and figure it out on his own. She said that way it helped him make his own opinion on a subject.

The other thing was that despite her scientific mind and blunt nature, she was also a caring person. A few days after he had woken up after the New Year's disaster Tenenbaum had sat him down in a chair and pulled out a pair of scissors.

"You need a haircut," She had told him. "It is much too long for a boy."

She also made a habit of complaining about his skinny frame. "Who has been feeding you? You look like a twig."

And of course she always let him watch the security cameras so he would always know where Rose was. The only problem with that was the cameras did not cover the entire city.

"What if she's in that frolic place?" Harry had asked. "Do we try and help her?"

"Nein," Tenenbaum had answered back. "If you believe in a god pray to them for her safety, but do ever go there." Harry could only nod while wondering what was so bad about Fort Frolic.

In recent days however Tenenbaum was spending much of her time in her office and doing research, into what Harry wasn't exactly sure, all she told him was that he would be finding out soon enough. He hadn't thought too much about it until he woke up to find she was not in the safe house.

He went to her office and checked the security cameras for her and saw that she was just now returning to the safe house.

"Where did you go?" he asked.

Instead of answering she handed him a bottle of what looked like perfume. "Spray this around the vents, the round ones."

He knew what vents she meant he saw Rose climb into them after she was done stabbing bodies with her needle. All Little Sisters used them to safely move around the city. "What is it?"

"It is Big Daddy pheromone. Now go and spray."

Harry did as he was told and sprayed the bottle near the vents. "I don't smell anything," Harry told her.

"The scent is not for you or me child," she told him. "It is made for those who are close to the golems. To lure them here."

The Little Sisters.

"Does this mean Rose-," he was cut off as he heard rumbling coming from the circular hole in the wall. Something or someone was coming. Harry felt his heart begin to beat rapidly as he spotted a head of black hair poke out of the vent.

The girl hung from the vent before letting go and landing on the ground and turning to face Harry. He was met with the sight of a black haired, pale skinned, brown eyed girl a few years older than himself.

"You're not Rose," Harry said disappointed.

"No," she said. "I'm Masha."

"Oh," was all Harry could say still disappointed. "I'm Harry."

"You look like Rose you know," Masha told him.

"You know here?" he asked suddenly interested.

"I met her at the orphanage," Masha explained. "She talked a lot with Eleanor."

"Is she okay?" Harry asked. "What orphanage? Who is Eleanor?"

"Enough of your questioning child," Tenenbaum chided him. "The girl must be tired and needs rest. Come little one, I have a bed ready for you."

"Okay mama Tenenbaum," Masha said following the woman. Harry would ask how she knew Tenenbaum but the woman would only tell him no more questions.

After Masha was asleep on one of the beds Tenenbaum began to explain the situation to Harry. Apparently a plane had crashed in the ocean above and a sole survivor was now stuck in the city. Tenenbaum had been watching his movements on her monitors and when he was in a position to harvest Masha she told him there was another way.

Tenenbaum had found a cure for the Little Sisters. She had Harry spray the vents so the girl would find her way to the safe house.

After hearing what Tenenbaum had to say Harry went from vent to vent in the safe house constantly walking back and forth hoping that Rose would come out. After about an hour or so another girl emerged from the vents.

She was a brown haired blue eyed girl named Leta, and following after her about half an hour later was a blonde girl with blue eyes named Sally.

Harry began to tire from walking back and forth. If he were to just rest his eyes for a moment…

"Vake up child," Tenenbaum's said snapping him out of his daze. "Come with me. There is something I vant you to see." She led the way to her office and pointed to a monitor.

It was Rose. She stood above her Big Daddy as it lay upon the ground covered in scorch and burn marks. Someone had managed to take it down for good. But what caught Harry's attention was the man that was approaching from the corner of the screen.

He was tall probably an inch or two above six foot; he had light brown hair and green eyes, and wore a white cable-knit sweater. He walked calmly up to the weeping Rose and picked her up. Harry wasn't sure but he thought he saw a tattoo on the man's wrist that looked like chains.

Despite Rose's clear protests to being picked up the man slowly reached a hand toward her forehead. The veins in the man's hand glowed and after a moment he set Rose down on the ground. The man watched as Rose scampered off to a vent before walking away himself.

"You see child?" Tenenbaum asked. Harry nodded feeling a swirl of emotions welling up in him, specifically around his eyes. He heard a clanging coming from one of the vents and he rushed right towards it.

As soon as Rose climbed out Harry trapped her in a hug. He felt tears start to run down his face as well as the feeling of Roses bringing her arms up to hug him as well.

Whoever that man had been Harry owed him a thank you.