Soon enough, one of them came running.
It was the balding one, and Dean figured that him volunteering was just him overcompensating for his lack of hair, a form of vampiric mid life crisis as id he had something to prove. He thought all of these things as he squirted the poor sap, in the eyes no less, until he dropped to the floor and began to spasm hysterically. He wasn't going to get anything close to the water Cas got, so it would take him a lot, lot longer to heal. Hopefully hours.
They were working together, back-to-back, like a well oiled machine. Cas sprayed the vampires that came his way, and Dean sprayed his own. Sam was out of view at this point and Dean could only hope that they'd taken him somewhere to use as a bargaining chip later and not as an afternoon snack.
Concern for his brother distracted him, if only for a few seconds, and within those crucial seconds he let his guard down by a fraction. This was enough to allow three vampires to come sprinting towards him in a blur, one knocking the gun from his hands and the other two grabbing his hands and feet.
"Cas!" Dean instinctively cried out when they proved to be too strong to take on.
"Dean?" Cas whipped around, not caring that his back now faced the enemy. "Dean!" Cas lunged towards Dean's captors and grabbed hold of his shirt. At the same time, three other vampires came from the crowd to hold Cas back.
No, Cas thought, I won't let go of him.
Please don't let go Cas.
Unexpectedly, a voice in the back of his head responded to Cas' thoughts. Cas' features melted into an expression of confusion, and he looked to Dean's face to see one of alarm.
I heard you in my head too! Cas, what's happening?
Cas couldn't make any sense of the situation, but from what he could gather, it appeared as if he and Dean were communicating: telepathically.
Dean, if you can hear me, blink three times.
The two vampires might have still been holding on to his appendages, but that didn't stop his eyes from complying with Cas' request. After Dean blinked three times, Cas was sure that they were communicating and that sprang up an idea.
The entire telepathic exchange took no more than ten seconds, and by the time Cas had his idea, the vampires were just about fed up trying to pull the two away from each other. Specifically, Samandriel was the most irritated.
"Get on with it already!" yelled Samandriel. And with this request came the sound of a shirt tearing.
"Cas!" Dean cried helplessly as they carried him away.
Cas stared on after them as he clutched the teared piece of shirt fabric. "Dean," he whispered to no one in particular.
The vampires brought Dean over to Samandriel, who was far enough so that when he told the vampires where to stash Dean, Cas couldn't hear, but close enough that Cas could easily see everything that was happening.
Dean, where are they taking you?
In a nearby phone booth.
"Samandriel," Cas yelled to grab his attention, "I wouldn't stash Dean in a phone booth if I were you, unless you want him to go on a rant about Dr. Who."
Samandriel tilted his head in confusion. Half confused on how his brother heard his whisper, and half confused on who this doctor was and why he had a pronoun for a last name.
"Josiah, Gadreel," he beckoned the two vampires carrying Dean, or dragging rather, over to him. "Follow me."
Using his vampiric speed he raced about a half mile away from the alley, and his vampire henchmen followed suit with their cargo. Satisfied that not even skilled vampire ears could hear him from such distance, he told the two vampires to stash him in the nearest dumpster.
"Aw c'mon guys," complained Dean, "Last time a hunt made me hide in a dumpster, it took weeks to get the coffee grinds out of my hair."
The glare that Samandriel shot him said a lot of things, but mostly 'would you like us to kill you now instead to save the trouble?'
Samandriel dropped to Dean's level, basically on the ground with his limbs suspended, and said, "I'll never understand how or why my dear, darling brother puts up with that mouth of yours."
Smirking, Dean said "First off, I think I'm adorable. Second, I have an amazing mouth-"
"Hah!" scoffed Samandriel, "I'm sure my brother knows all about that, Mr. Winchester."
The cocky smiled melted off Dean's face as he realized how his comeback had backfired.
"You know, me and Cas are not a couple," he said, as he tried to stop his face from changing color.
"Oh yes of course, Dean," agreed Samandriel, "And I'm not a vampire. Do with him what you want boys, just leave him alive, for now."
And with that, he flashed Dean one last toothy grin and raced back to the alley where his guests and outcast of a brother were waiting for him.
As soon as he arrived, Cas wasted no time and said, "Coffee grinds and Dean's hair color do not go well together, trust me."
Externally, Samandriel's expression did not change beyond a small twitch under his right eye. Internally, he was screaming as his whole body raged about these two lovers who could seemingly communicate through thought. Which wasn't possible, was it? He remembered reading long ago about vampires who shared a strong connection and were able to telepathically communicate. But this sort of communication between a human and a vampire? Never.
The whole thing was something he didn't understand and that angered him even more. Hiding Dean until further use proved to be unsuccessful, as long as those two kept making it some tragic game of hide and go seek with a romantic twist.
But hey, if they wanted tragedy, he could give the people what they want.
He reached into his pocket and dug out a walkie-talkie. "Josiah, come in Josiah."
"Yeah boss?"
"Bring him back. Castiel here wants to play a game." He dropped the walkie-talkie and it shattered on the ground,
Cas couldn't be sure, but he figured this was just for dramatic effect to let it be known he was furious, as he could have easily put the phone back in his pocket. Cas would not let his melodramatic brother scare him or get inside of his head. Not now, when too much was on the line.
Within seconds, Josiah and Gadreel were back, carrying a beaten and bloodied heap where Dean should've been.
"Dean!" cried Cas as he teared himself away from the vampires who held him. Dean's captors dropped him to the ground and Dean released a soft moan of pain.
"Dean," Cas kneeled to the ground and put Dean's head in his lap, "I'm so sorry."
Dean heaved himself up so that he was sitting upright and facing Cas. "Naw, don't worry bout it Cas. It looks a lot worse than it is."
Cas shook his head at his human, so stupidly headstrong and always putting on a brave face,
"Good news and bad news, brother," said Samandriel, although Cas didn't bother to look at him. "We're not gonna kill him."
Now that made Cas break eye contact with Dean and search his brother's face for dishonesty. He had known his brother all his life and he could always tell when he was lying.
This was no lie.
He sprang up and pulled Dean up with him. "You're serious? After all that, you're letting us go?"
"Well now let's not question the man's kindness, Cas," Dean said, "Don't look a gift horse in the mouth."
Cas tilted his head in curiosity at Dean's strange saying and Dean started laughing out loud. He only stopped because something in his stomach ached when he laughed. One of those bastards probably broke a rib or something.
"But wait," Cas said, turning back to Samandriel. "What's the bad news?"
"Oh yes, thank you brother, how could I almost forget," Samandriel agreed, "We're not going to kill him," his fiendish smile grew wider and more wicked, "but you will."