When Molly Hooper entered her lab, she walked straight to her microscope, stressed by the time. That's only a few minutes later that she noticed someone was taking notes in front of her. She jumped in surprise and put off her gloves with anger. If it wasn't Sherlock Holmes, no one without a white lab shirt could enter this lab.

« - Who are you ? » she asked abruptly.

The person raised absently her head and looked straight in Molly's eyes. She dropped her mouth in front of the beauty of the young woman sat in front of her. She had very long and thick curly black hair, mesmerizing light blue green eyes, straight thin eyebrows and generous lips slightly opened in surprise along a perfect jawline. The young woman got up quickly and began to spread in excuses.

« - I'm sorry I was in my notes, I thought you've had noticed me, but that you were too busy to… Well sorry again ! said the young woman. My name is Caroline Rose, and I'm a writer. I asked Doctor Stanford if I may take notes about the job of a pathologist, as my next book is talking about it, so he told me to take you as an exemple. You're Doctor Hooper, aren't you ?

- Uh…., hesitated Molly whom Mike never told her about this Caroline Rose. Yes my name is Molly Hopper, miss Rose, but I think Mike should have let me know of your presence…

- Oh yeah ! said Caroline slapping her forehead. He gave me that note for you. »

Molly took the note and red it.

« You're in great danger, you have to hide until things come back to normal. »

Molly opened her mouth, eyebrows frowned, but Caroline Rose spoke before her :

« - You just have to stay here with me and do…things you usually do ! said Caroline in an enthusiastic voice.

- What does this note mean ? said Molly in panic.

- I think it's clear, no ? murmured Caroline to be heard only from Molly. Miss Hooper, since James Moriarty is back, you're no longer in security.

- Why ?! whispered Molly, afraid.

- Because you were the number in the equation which had make it fail. You helped Sherlock Holmes to fake his death, you're the one who made it all possible, who made it all impossible for Moriarty. And now he is back, he's not gonna miss you. He has planned things for you, and the Watson… »

But Caroline Rose had been interrupted by the opening doors of the laboratory. She came back her notes, hiding her face from the visitors with her hair.

« - Molly ! said Sherlock Holmes, accompanied by John Watson.

- Sh…Sherlock ! she said in relief. Aren't you…in prison or something else ?

- You didn't told her ?! exclaimed John.

- Nope, said Sherlock in his casual tone. This is not important, the important is…. Who's that ? » he asked pointing at the writer.

- Oh she's…a writer, who take some notes about my job ! » said Molly.

Sherlock wore a suspicious look and took some steps close to Molly and whispered something at her ear :

« - Molly, I know you well now, and I know when you're lying… »

Molly shivered in fear and almost in pleasure of feeling his breathe on her skin. Caroline Rose frowned and began to pack her stuff, and to walk out of the lab.

« - Where are you going ? Sherlock asked to the young woman

- I have to go home and sort all I wrote today, sorry for bothering. »

Suddenly, Sherlock noticed the note Caroline gave Molly some minutes before and froze. That handwriting….

« - Oh you have a home now ? » Sherlock said in a sarcastic way.

Molly and John shared an interrogative look. Since when was he familiar with strangers ? Suddenly, the young woman began to run off the room, but John Watson tried to stop her. Wrong idea.

« - John ! No ! » shouted Sherlock.

But it was too late, John was on the floor, two hands on his painful stomach while the young woman was running away from the hospital.

« - Oh for God Sake ! shouted Molly, running to John.

- I didn't see it coming, he breathed out in a whisper. I think I've been hit in the stomach.

- It's okay, Molly, Sherlock said, she just did him karate grip, she's a karateka. He will have some difficulties to breathe a few minutes, but he's gonna be okay.

- How…, stuttered Molly, do…do you know her ?

- Of course ! he said. Though it was hard to recognize her, genes don't lie. Same hair, same eyes. Her name is Caroline Rose and she…was….my sister.

- What ?! Molly said in shock. Wait…why « was » ?

- Long story, answered back Sherlock. Molly that's important since you're involved this time, so tell me ! Tell me what she told you !

- She said Moriarty had planned things for me, to take his revenge on you… And she was about to talk about the John and Mary when you came in, said Molly.

- We have to find her back ! shouted Sherlock in anger.

- What ?! said John, getting up with some difficulties.

- She knows things we want to know…, said Sherlock. We need to find her back before Moriarty does. »