"See? She's figuring it out," Dean whispered to his brother. 
  "I've never seen her before in my life," Weems stated.
  "Wait a second, you saw somebody?" Sam asked. 
  "Yeah, some chick," Weems replied. "After she shivved me, she took off in an old VW bug."
  The two hunters and ex-angel turn, back facing the two imaginary men. "So this is a good thing, right?" Sam asked.
  "Uh, no, this is a great thing," Dean corrected. "I mean, a manicorn, a freaking mermaid? What am I supposed to do with that? But a chick in a car? That's terra firma, I'm home."
  "So we think a baby chicken driving a car is killing the imaginary mermaids and manicorns?" Catherine asked. 
  "No, uh, chick as in a woman. It's another word for woman," Dean explained. 
  "Alright, you two go. I'll cover these two," Sam said.
  Dean glanced back. "I gotta ask. Hey, uh, acid-wash. What's so special about you?"
  "Mermaids dig me?" Weems lifted his shoulders in a shrug.
  "No. I mean, why do kids like you?"
  "Oh. I play air guitar."
  "You play air guitar?" Dean asked. "Sam plays air guitar. I can play air guitar."
  Weems chuckled, sitting up and holding his hands as if he held a guitar. He strummed cords that weren't there but music played loudly as if they were. 
  "I'm not sure you can do that," Catherine told Dean.
  "Well, he's no Clapton." Dean set an arm around her shoulder as they walked toward the door.
  "What's that?"
  "Eric Clapton. It's a dude."
  "He plays air guitar?"
  "Real guitar."
^^^
  CATHERINE REGRETTED GOING WITH DEAN WINCHESTER.
  Well, it was fine, at first. Then it wasn't. She and Dean were having a grand old time, chatting, joking, looking for the imaginary friend murderer. Then they got kidnapped. 
  "Good, you're awake," a voice said as Catherine came to. "You're brother's on the way."
  Dean must be awake too.
  Catherine then realized she was tied to a support beam in some type of shed. Panic rippled through her. She couldn't move, couldn't breathe.
  "Who the hell are you?" Dean's gruff voice echoed in Catherine's ear. It sent a shiver down her spine, but not in an unpleasant way, she realized. 
  "I think we have a mutual imaginary friend," the voice said, moving closer. "You know Sully?" The girl had a hood on, only her face visible.
  Catherine struggled to get a breath in. She pulled against her restraints, but it did no good.
^^^
  CATHERINE WAS IN FULL-BLOWN PANIC ATTACK MODE. Her chest hurt from the hyperventilating, her eyes stung as tears brimmed them, her head throbbed, everything was too much. 
  The girl who had kidnapped them was holding a knife to Dean's throat as Sam and Sully walked in.
  "Reese?" Sully asked. 
  "Hey, stranger. You give me Sully, I give you your brother," Reese replied.
  "What do you want with Sully?" Sam asked.