Sherlock was lying on the couch, half asleep, when John entered. Thinking Sherlock to be sleeping, he started arranging things in their proper place. Sherlock opened a single eyelid.
"What are you doing here?" He asked.
"What do you think I'm doing?" Asked John, throwing fowl milk to the garbage bin. "I'm cleaning."
"Why? Shouldn't you be at a dinner with Mary?"
"I was," said John, "dinner is over. Mary offered I'd pass here to see if you have any insights about the Mycroft related case."
Sherlock looked at John for a couple of seconds before answering.
"I had some insights," he said slowly, "yet not the big breakthrough. I know it had something to do with the girl, but I don't know where she is, or who she is." Sherlock rubbed his eyes. "I need more details, when I have none."
"Had you considered the option that there is no big breakthrough?" John asked. "I know you think there must be something but what if there isn't? What if there is really nothing going on?"
Sherlock sat up on the couch immediately. It made his head spin but he ignored it and looked at his friend.
"Just so you'll know, I spoke to Molly and she informed me that the woman is a cancer patient and that they were at Oncology for her. She's ignoring Mycroft for an unknown reason and yet, he followed her there. He entered with her to the Doctor's room. But he claimed that she's a coworker of his, despite the fact that it is beyond any doubt false. Is that something enough for you?" He finished expecting an answer from John.
John looked at his best friend in sympathy. "I understand there's something," he said, "but you can't work on it while you're that tire. Go to sleep and continue tomorrow. It's not like they will go anywhere."
John's phone started ringing and he turned to take the call. Sherlock looked at the clock. Midnight exactly. Who calls this late? He wondered, tiredly, and started walking towards the bedroom. John's voice stopped him.
"Sherlock!" He called. "Come here!"
Suddenly, Sherlock wasn't this tired. He crossed the flat with three steps and reached three kitchen where John was apparently in a middle of a phone call. John marked him to come closer and put the phone on speaker.
"Oh, that's much better." Said a female voice out of the phone. "Now I can talk and everybody can hear me. But not everyone can talk. Only Johnny boy."
John and Sherlock's eyes met, and a sudden understanding crept into Sherlock's mind.
"Who are you?" Asked John.
"What, don't you recognize me?" Asked the woman. She spoke monotonic yet the words expressed what the voice hadn't. "After all we've been through, I'm offended."
"Moriarty."
"First warning. Next time anybody but Dr. Watson it's speaking," For the first time, her voice trembled. "She will suffer."
"What do you want?" John asked. "What is the little game you want us to play this time?"
"Well, that is up to you to find out, isn't it?"
"What do you mean by that?" Asked John, confused.
"Find us." Moriarty said, using the girl's voice. "You have eight hours. Or else..."
The call was cut off and John looked up at Sherlock.
"What the bloody hell was that?" He asked.