He was back... And stronger than ever, he always promised he wouldn't harm Sam but no matter what he couldn't let Lucifer lay a finger on him! "Stay away from him you bitch!" He yelled before being impaled by a knife... Dean woke up panting, "What the hell..." He was in one of the beds in the Tardis. The Doctor had decided that they could be his new companions (although usually there are only 1 or 2). He looked around noticing Sherlock sitting up and talking to himself, "Hey Sherlock, why are you up?" The curly haired man looked up and saw Dean staring at him, "Nightmares... I'm guessing same goes for you." Dean nodded, "Yup." Sherlock looked around and saw that Castiel was missing, "Where's Castiel?" He looked at Dean and stood up, "I don't know... Should we go looking for him, I mean we're still on a different planet." Sherlock nodded, "I'll go ahead and check if he is outside, if he isn't then we'll search for him in the morning." He said as he walked out the Tardis door, "Castiel? Cas?" He looked around then circled the Tardis when he suddenly heard the sound of wings. Sherlock turned around to see Castiel, "My apologie-" he was cut-off, "You should stop using your powers while you still don't have your original grace... Otherwise it's fine, Dean is also awake and we just got a bit worried." Castiel looked at him suddenly concerned, "Wait, why are you both up? It's the middle of the night." Sherlock looked at the angel and sighed,"Well nightmares... Mine are about John and I'm guessing that Dean is scared that all the things they've killed will come back."
Castiel looked at him with a confused look, "What do you mean?" The taller man looked at the TARDIS and then back at Castiel, "While he was asleep he was saying the name "Lucifer" and "stay away from him" in his sleep so I'm guessing... Lucifer is an enemy of yours?" Castiel nodded, "He is my brother, you know in the bible where he is sent to Hell and creates demons to torture humankind... Well Sam is his vessel and he has tried very hard to get Sam to let him take control." He looked to the taller man and sighed, "I suppose we should get back in there before Dean wakes up and tells everyone we were kidnapped by aliens." Sherlock gave him a slight smile as they both walked inside the TARDIS. Dean had still been sitting on his bed and looked up at the two, "Oh good, for a minute I thought you guys were in trouble." Castiel gave a slight nod and looked to Dean, "No, we aren't in trouble, anyway I think you both need some more sleep so why don't the both of you go back to bed." Sherlock and Dean's eyes met, "Yeah that sounds like a good idea." Sherlock said to the both of them as he walked to his bed, "Goodnight to the both of you." Castiel said to them as he turned around to see the main center of the TARDIS inside while the others eventually dozed off.
They woke up with the sound of the Doctor yelling, "ALLONSYYY!" Sherlock gave a light chuckle because it had reminded him of the first time he had met the Doctor. Him and Watson were on a case as usual but then they finally get stumped, as they were looking for clues they had ran into a man who had yelled the exact same thing but to a girl with blond hair, they were running around London and had just randomly bumped into them and Sherlock could barely lay a dent in what kind of a man the Doctor was. Sherlock had zoned out think about that over and over until Sam snapped him out of it. "So where are we going today Doctor?" Sam asked as if they were going on a field trip in school. He looked up from his panel and replied, "Well I believe my sexy has something planned for us." Right as he had said this they had begun traveling.
Once they had stopped Castiel was the first to look outside, "I believe we're... Back in London?" He seemed confused until the Doctor smiled and open the door hopping out with glee, "Not just any London, Sherlock's London! I found a crack! We can get John!" Sherlock was shocked as he ran out the TARDIS and immediately ran the way towards 221 baker street yelling, "John I'm back!" over and over. The others chased him as fast as they could. When they had finally reached the destination Sherlock and the Doctor ran inside yelling John's name, the others out of breath walked in as they went to a room where Sherlock was hugging another man... John. "I I can't believe you're back Sherlock! I thought you left for good this time! Thank god you're not dead!" They both smiled as they turned to the Angel and Winchesters, "Dean, John, John, Dean. John, Sam, Sam, John, and Castiel, John, John, Castiel." He introduced them. They shaked John's hand and moved on to a different conversation about what happened. The Doctor explained the cracks in the universe and how he thought they weren't supposed to be open until Castiel had corrected him but after they had sealed the deal. Then he talked about what they had done during Sherlock's absence which was solve a case or two and bake a little.
They had some laughs and talked about serious subjects but not many only to bring up three main villians... Moriarty, the Master, and Lucifer. It started out as a joke until they got into Moriarty being in the Winchesters universe which wasn't bad at first until they found that the Master AND Lucifer were also there. They might as well become the most evil masterminds in millenniums, who knows what will happen. But now that this question was up they didn't know whether to fight it or stay where they were and they decided... To fight it.