Just as John had started to think the situation couldn't possible get any stranger, he turned around to see a confused looking man in a trench coat.

'Jesus,' John sighed, he didn't even know if he was even surprised anymore, with all the unusual things that had happened that day. Sherlock, however, seemed very interested in the man who had just arrived. Sherlock could tell everything about a person, well, almost everything, from a glance, yet this man gave no clues to anything about his life, and Sherlock simply couldn't fathom how he had arrived, there seemed no logical explanation from the surrounding area that suggested it was even possible for him to be standing there, but he was.

'Cas,' said Dean, sounding rather surprised, 'Thought you were busy with angel stuff.'

Cas turned to him, 'Yes.'

'Then, why are you here?' prompted Sam.

'Because I believe I too want a,' Castiel pause, as if he was searching for the word, 'vacation'.

'Im sorry,' John interrupted, 'but say again, who are you? And how did you get here?' Castiel stared at him, Sam and Dean turned to look at each other. John Watson already thought they were cuckoo enough, without adding an angel in to the mix. Sherlock was still looking, fascinated, at Castiel, wondering who he could possibly be.

'Cas is, um, a friend of ours, he's, well..' Dean started

'Im an angel' finished Castiel, John looked around in disbelief, he couldn't believe Sherlock was letting there obviously insane people into his home, or work a case with him.

'We're kinda busy right now, Cas.' Dean said gruffly.

'Doing what?' Castiel inquired.

'Hunting some vamps.' Sam explained.

Castiel's face lit up slightly, 'Can I come?' Though Dean said Cas 'sucked' at hunting, he did enjoy it, even more so after his experience as a human, by killing these monsters he was saving people, and after all the lives he had hurt, it was important for Castiel to try to save some too.

Dean shrugged, 'Sure I suppose, you mind Sherl?' Sherlock turned his head at the question, he had still been looking at Cas, desperately trying to deduce something, anything, about him, but it was the woman all over again. He nodded slowly.

'Before we go anywhere, someone needs to track the IRLP, can either of you do that?' Sam asked.

'I can,' Sherlock said. For Sherlock, hacking was simple, and they had found the location in under fifteen minutes. While he had been hacking, Dean and Sam had listened to Castiel catch them up with the war for heaven, while John listened on, completely confused, and starting to doubt his own sanity. One thing John was finding odd, was the Sherlock hadn't even questioned the 'angel', though everything was odd today.

'Next we'll need weapons.' Castiel said, trying to sound like a professional hunter.

'I've got for me and Sam in the car, as well as some stuff on us, Cas, you got your angel blade?' Cas nodded, 'And you two, what do you have?'

'Follow me,' Sherlock said as he lead them to his bedroom. From under the bed he pulled out a large wooden box full of assorted weapons. Everything from guns to crossbows was in there. John looked, yet again, in disbelief at what he was seeing. At all the time he had lived at Baker Street, he had never once seen this crate, had it been there the whole time?

'Wow,' Dean sounded impressed, 'Take anything you think will cut a guy's head clean off.' Sherlock chose a thick blade, about the length from his wrist to elbow.

'John, you're going to need a weapon.' Sherlock suggested.

'No, I'm not, because there's no such thing as a vampire, and you're all insane.' He pointed at all of them and then took a few steps back. Cas looked at him, squinting as he tilted his head.

Sherlock sighed, 'John, we all know you're going to come so just choose a weapon.'

John straighten himself, 'I've got my gun,' he said.

Sam shook his head, 'No good.'

'Fine.' John said, as he picked up an old carving knife, touching the edge gingerly to see how sharp it was.

'One last thing then we'll be good to go, this is just a gamble, but got any dead man's blood and some syringes by any chance?' Dean asked. Dead man's blood was not one of the things him and Sam had expected to need on their vacation.

'Syringes are in the kitchen, in the draw. I think there's blood in the fridge.'