The following day they got another phone call from the coroner's office. With absolutely no leads as to what this thing was, the most helpful thing to do was find a pattern in the deaths. Not the most uplifting thing to do, but the most helpful.

As they walked down the hall, Sam turned to stare at a bald man in a suit, holding a briefcase while he walked the opposite direction down the hall. Thank goodness the man seemed intent on where he was going, because he was really getting a stare down. Kayla nudged him and he turned back around.

"You okay?" Dean eyed him.

"Yeah, fine." He took another glance back. The guy smelled so strange, hadn't they noticed?

The only thing Dean had noticed was that Kayla's hand kept finding him; his hand, his sleeve, his jacket, something. "You sure you want to do this?"

She let go of his arm, a little surprised at herself. They were dressed and ready for a job and she couldn't keep from touching him. She was usually careful to keep her hands to herself while they were working, but she hadn't really realized she was doing it. "Yeah, no problem."

"You can wait in the car, Sam can do it."

"No, I hate waiting in the car." Which was true enough, but not why she didn't want to. Hell, she didn't want to be away from him. Was her subconscious really starting to buy this end of the world, heaven and hell battle bullshit? She didn't think she'd given up the fight yet.

"Agent Marley." The man greeted him warmly. "You just can't stay away."

"Heard you tagged another double suicide."

"Just got finished closing them up."

"Dr. Corman, you remember my partner."

"Of course." He nodded with a hidden smile. "I hope you brought a stronger stomach today."

"I did. This is Agent Cliff, he's a behavior specialist."

He shook Sam's hand. "Agent Cliff. I did my preliminaries, pulled the organ sets and sent off for the tox screen."

Sam nodded. "Do you mind if we take a look at the bodies?"

"Not at all, but like I said, their 'good and plenty's' are already tupperware." He opened the fridge.

"Super."

He tossed Dean the keys. "Leave the keys with Marty up front, and please, gentlemen, refrigerate after opening."

Dean smirked as he walked out the door. "Let's get started."

"What's this about needing a stronger stomach?"

"Nothing." Kayla pulled a chair up to an empty table.

"You didn't lose your cool over a little gore did you?"

Dean set a few of the containers on the table. "Leave her alone."

He smiled and shed his jacket, replacing it with one of the exam aprons. Dean did the same and they started sifting through organs. Kayla tried to help at first but the fumes from the chemicals turned her stomach. She pulled her chair behind Dean's and stayed close to him but kept her head down, playing it off like she was using her phone.

Sam opened the third container and lifted a piece of intestine, giving a distasteful grimace as he set it back down.

"Hey." Dean pushed his tupperware container over, showing Sam the bloody heart. "Be my Valentine?" Sam rolled his eyes, but Dean noticed when Kayla got still. He cursed under his breath.

"What's the date today?"

"Um…"

"The fifteenth." Sam stated.

"The fifteenth. Of February? Yesterday was Valentine's Day?"

Sam laughed quietly. "You didn't do anything for Valentine's Day? Dude, you are so screwed."

"She didn't even know it was Valentine's Day." He glanced back to Kayla. "I just thought you'd finally agreed with me, in light of not following commercial holidays."

"You still celebrate St. Patrick's Day."

"That's different. There's alcohol involved." She didn't answer. "Happy Valentine's Day?"

Sam grabbed the container with the heart and pulled it close to him. He flipped open the lid on the other heart and put them side by side. "Look at this."

Dean immediately feigned interest. "What?"

"These hearts have identical marks on them. Almost like a letter." He lowered the magnifying light down. "Look…oh no."

"What?"

"I think it's Enochian."

"You mean like angel scratchings? So you think it's like the tagging on our ribs?"

"Dean I don't know."

"Oh hell." Dean pulled out his cell. "Cas it's Dean. Yeah, room 31C basement level, St. James Medical Cen…"

Cas stood directly in front of him, still on his phone. "I'm there now."

"I get that."

"I'm gonna hang up now."

"Right."

He walked over to the containers and looked at Kayla. "What's wrong with you?"

"Nothing."

"You look pale."

"Thank you, Captain Observant. Please just, look at the hearts."

He picked up one of the hearts with his bare hand and turned it to see the symbol. He did the same with the other. "You're right Sam, these are angelic marks. I imagine you'd find similar marks on the other couple's hearts as well."

"So what are they, what do they mean?"

"It's a mark of union. This man and woman were intended to mate."

"Okay, but who put them there?"

"Well," he wiped some of the blood off his hand. "Your people call him cupid."

Sam stared at him. "What?"

"What human myth has mistaken for Cupid is actually a lower order of angel. Technically it's a cherub, third class."

"Are you serious?"

"Yeah Cas is such a joker." Kayla started putting lids back on the containers and Dean helped her. "Tell 'em another one Cas."

He paused to realize she was being sarcastic. "Cherubs are all over the world, dozens of them."

"You mean the little fat kid in diapers?"

Cas looked at him. "They're not incontinent."

Kayla laughed and shut the refrigerator door. The smell started to subside.

Sam shook his head. "Whatever, anyway, so what you're saying is…"

"What I'm saying is," he snapped at him. "That a cupid has gone rogue, and we have to stop him before he kills again."

He nodded. "Naturally."

"Of course we do." Dean encouraged. It wasn't often Cas got passionate about a job.