Hey Guys! Just trying out a new idea I had! Of course this idea came from the wonderful Cassandra Clare's The Infernal Devices series of which I am a hardcore Tessa x Jem fan. The Real Me is still number one priority but I love this idea, so here it is!

A few things, you need to know about this story before you read it is:

The Infernal Devices series actually occurred in the early 1920's

This is after the series minus the epilogue

Jem didn't die or become a Silent Brother

A cure was found for Jem

Jessamine didn't die or betray everyone. She did however fall in love with Nate as per the series

Charlotte Branwall relocated to the New York Institute after Infernal Devices

Chapter 1:

New York, 1924

When Jem sat down at the table in his room overlooking the city that night, he had a bad feeling. Jem willed it away as imaginary. What he didn't know is that the events that he didn't know were happening in glitzy, glittery New York City that night was going to change his life forever.

When Kathryn went out that night for fun, she didn't know that on the other side of Times Square, her fate was waiting for her.

The next day was one of indifference for Jem. He dressed and went to join Will, Tessa, Charlotte, Henry and Jessamine for breakfast. Before entering, Jem took a deep breath and secured a mask of light happiness to hide the turmoil and sadness he would feel when he saw Will and Tessa smiling and laughing with each other. It wasn't that he exactly hated Will. No, he could never hate is own parabatai but he did feel a twinge of jealously when he saw Will and Tessa together. When he entered, he saw Jessamine wasn't there but he didn't assume there was anything wrong until about half way through breakfast. Jessamine sometimes took longer to get dressed because of the style of clothing.

Six copies of the paper were delivered while they were eating breakfast. On the front page was yet another photo of a nightclub that had been raided but no alcohol had found. As Jem flipped through the paper in an effort not to notice Tessa, all he saw was the rise of the rebellious girls called Flappers. When Jem glanced up from the paper, he struck with a sort of glad feeling that Tessa hadn't turned out like one of these girls, he'd always found more traditional girls a little more classy.

Just then, a high-pitched scream came from the entrance of the Institute. Jessamine's scream. Will, Charlotte, Tessa and he sprang out of their seats and went to see what was happening. It took a little longer because the entrance was so far away from the dining hall. When they got there, they got the shock of their lives. It's wasn't Jessamine who was hurt though. No, it was girl about the same age as them, with blonde hair. Her head was rolled to one side and her she a nasty gash across her forehead. Dried blood caked the gash and blood soaked her cream coloured dress. She was sprawled over three stairs and her body laying to the side. Charlotte rushed down the stairs after getting over the shock before anyone could react. She grabbed the girl's wrist and after a few seconds that seemed like an eternity, she breathed a sigh of relief and some colour returned to her otherwise pale face. It seemed she still had a pulse and because of style of dress, they couldn't see the rise and fall of her stomach as she breathed until Charlotte put her hand on her stomach and a little more colour returned to her face. Jessamine was kneeled down next to this girl, a look of pure shock and horror plastered to her face.

"She's breathing but only just. Her pulse is very weak and she must have been unconscious for about six to seven hours. Jem! Will!" Charlotte called. "Take her to the infirmary."

Jem and Will rushed down and lifted her up with Jem supporting and Will supporting her legs. They rushed to the infirmary, careful not to move her head too much.

They laid her down on the nearest bed and Jem took her pulse again. Charlotte was right, her pulse was very weak but there was something rough on the inside of her wrist. Jem turned her wrist over and nearly gasped at what he saw. Jagged cuts crisscrossed her wrists. Some were semi-healed and the all formed a star on the inside of her wrist. The thing that disturbed Jem the most is that jaggedness of them made them look self-inflicted.

"Will!" Jem called. "Will, come here for a second!" Will strode over.

"What's wrong?" Will enquired.

"Here, look at this." Jem turned the girl's wrist over and heard Will gasp suddenly.

"It looks like she did it herself." Will assumed. Jem just nodded. Just then the doctor ran back in with supplies and shooed them out.

As soon as Kathryn's head hit the pavement of the stairs, an unimaginable pain burst through the back of her skull, making her hoarsely cry out. Even through the pain, her mind registered that she was at the New York institute and though it was the last place she would have gone for help, she was glad it was someone who wouldn't turn away an injured person. That was the last thought that passed through her mind before blacking out.

"Kathryn, Shadowhunters. You are in their sanctuary. Kathryn please, wake up." Her mind whispered to a still unconscious Kathryn. Kathryn in turn bolted up into a sitting position, immediately cursing out loud when slices of pain rushed through her. Slowly, Kathryn moved her hands and felt the throbbing in her head and was met with a soft bandage. When she looked down, she could see that she still had her Chanel dress on from the night she was thrown on the steps. When Kathryn looked around to figure out where she was, she saw a figure scurry hurriedly past. She still couldn't move very much without a lot of pain, but about two minutes later, five figures came in. They turned on her light and came to stand in front of her bed, all in a straight line. Two boys and three women. Kathryn's eyes adjusted to the sudden light and her eyes widened as she figured out who these people were and where she was.

"Shadowhunters." She spat, disgustedly. Kathryn had the dying urge to get out of here as fast as she could. She started to get out, wincing in pain every time she moved until Tessa and Charlotte pushed her gently but firmly back down onto the bed. The girl glared daggers at them. Jem could see she was a very beautiful girl, with light brown hair and emerald green eyes that hardened in rage but were still gorgeous even though they were tinged in red. She was one of those. A Flapper he had just seen in the paper that morning.

Her hair wasn't cropped or bobbed but was cut short down to her shoulders. The dress that was torn, stained with her blood and pretty much ruined was a very daring choice of clothing. Instead of only being a little shorter to show flashes of the leg when girls walked, this girls dress only went up to the knee and showed her legs fully. Her dress screamed money and in fact her whole demeanor and attitude screamed power and money.

"What's your name, dear?" Charlotte asked gently.

"Let me out of here, you bastards. You can't keep me here against my will." The girl hissed.

Yep, this is kind of an awkward ending, but because I wrote this on vacation, I didn't think about chapters, so yeah. Anyway, hope you enjoyed. It was surprisingly hard to come up with a title for this story. Happy Reading!

Eashi Chand