Monument island, home of lamb, or as a very select few know her, Elizabeth.
when Booker and Kain landed on the ground they could feel that it was different from the rest of Columbia, it felt like it was hiding something important from the world.

"I don't like this, it's too quiet." Whispered Booker as he realized that there was really almost no noise.
Kain looked around but when he saw something against a wall he relaxed.
"calm down, Amy's been here, she must've cleared out the goons for us, she'll be around here somewhere."

It didn't bring any comfort to Booker however, he was still very untrusting of Kain and his accomplices.
"You ready? Or do you want to carry on with your mistrust?"
"Look I still have my reservations about you and your friends, can't I have that at least? You I'm starting to trust little by little but old habits, you get it."
"Believe it or not Booker, I know exactly what you mean by that, oh well, look after we get this girl out of this tower I'll tell you everything that you want to know that you don't already."

Booker accepted his terms and continued on inside with him, the area was pretty much deserted and that made it easier for them to just look around without any hassles to slow them down.
"Geez Amy, you really don't like to leave a mess do you? That time away from rapture really did help you but it didn't dull your skills a bit."

They had walked through some strange rooms with coils and very large 'speakers' that seemed to be sucking in streams of blue light, Kain quickly recognized what they were and said that they needed to carry on.

"What is that stuff."
"it, it smelled similar to ADAM, it's a miracle drug that can let you rewrite your genetic code, I could be wrong but that liquid definitely looked like energized ADAM."

Booker was about to continue questioning him but stopped when he realized that this was a subject VERY uncomfortable for Kain.

Instead they just got onto a elevator and headed far up.
"Huh, I wonder where Amy went, I was expecting her to be with us already."
the doors opened and Kain was greeted by the same woman that he was talking about.
"It's good to see you, so where is she?"
"She is inside there, but there is only one way through, come on."

They walked to a view port and Booker pulled the lever, there she was, the same woman that they were looking for, she was twirling around with a picture of the Eifel tower in her hands.

"One way?" asked Kain as he realized that she didn't noticed them.
"Yes, come on, she should be going to the dining room now, there's something that you need to see."

They followed Amy and saw that Elizabeth ran off, eventually they arrived at another view port and Booker opened it quickly.

There she was, standing at in front of a large picture of the same monument but with a lot more detail in it.
"She did that herself."
"impressive."
"Oh that's nothing, watch this, she should be opening it in a few seconds."

They watched intently but Booker didn't think that anything was about to happen, to his surprise however the girl grabbed the air in front of her and pulled hard like she was trying to tear something open.

A rip formed right in front of her as she pulled, the harder she pulled the easier it became for them to see it, when she threw her hands out it tore open completely, she had ripped a whole in space, on the other side of that hole there was Paris.

They heard a song but quickly saw a car driving to them, the girl panicked and forced the rip close, when she did everything returned to normal, well except that her picture had been left behind in Paris.

She sighed and walked away.
"um, I have no idea how to comment on that one to be honest with you."
"Impressive right?"

Booker couldn't believe it, after what had just happened the pair next to him were acting like it was nothing.
"Come on, we need to carry on, maybe we can still catch her in time."

They ran further but there was no real way to reach her, the only way that they found was by accident, they had reached the very top of the tower and tried to walk past a metal plate held up by chains, the chains couldn't support them and snapped, the trio fell down into the library, Amy landed gently on her feet and Kain quickly got back to his but Booker grabbed onto a bookshelf and tried to help himself up, saying hello to Elizabeth, her reply was to throw him with books, the man lost his grip and fell down on his back, but she ran down and threw him some more, only stopping when he grabbed her.

"That's enough alright."

"Are, are you real?"
The girl's replay stunned the man as she reached to him and touched his face.
"He's about as real as you can get."
She looked at the others after Kain's remark but a loud eagle-like call screamed out after a tune came from a metal statue along with steam.

The girl started to panic and told them that they needed to get out, Booker joined her and Kain started to feel the door that locked them inside.

"Solid, too much, I won't be able to melt through that in time, not even if I used all my power in excess, there has to be another way out, Amy?"

The woman smiled and tossed Kain a key, he unlocked the door and told everyone to run through it but when he started to open it a alarm went off, the eagle-like call turned into a screech and the entire building started to rock back and forth.

They all ran through with Kain at the back and the others up front, but as they ran through the building a large section of it was scraped clean off.

"WHAT IS THAT!"
Elizabeth was the first to answer the investigator's question, songbird, that was all she could say however.

They reached an elevator quickly and called it but without warning the entire doorway to the elevator blew open an a monster poked its head in, it was like a hulking man had been taken and strapped into a sealed bird suit twice its size but the thing grabbed Booker first and was about to crush him when the elevator came and fell on it, forcing 'songbird' to go down with it, the group quickly ran through into a nearby opening that led through the superstructure of the building, they only had one way to go, up.

They reached the top once more but the winds outside howled more intensely, not to mention songbird easily glided through it all and attacked them.

They fell down and would have died but Booker grabbed Elizabeth before pulling out a skyhook along with the others, they all clamped down a nearby sky rail and tried to ride it to victory but Songbird smashed it, forcing them to fall free yet again.

They all fell but it wasn't long before they fell into the water, certainly not long enough for them to have fallen into the ocean.

The last thing booker saw was songbird diving in after him and gripping him, trying to kill him but the metal bird's weakness was revealed.
The water seemed to be crushing through the material it was made of, it had to quickly swim out, Booker's vision turned dark after that.