"Yes, we spent a rather interesting morning looking at ways in which they do."

"That sounds fun? So we should all talk about what's going to happen next, right?"

"Right. Did you end up getting any good information?"

"There is frustratingly little available. I think hellhound is the likeliest possibility, the flames and the 'escort to the dead' aspect fit. I have no explanation for why he would be stacking corpses on the Nemeton."

"It's a sacred place of magic. It makes sense he would take them somewhere like that." 

"The Nemeton does attract magical activity, so if he's not fully in control of himself, he might just be drawn there."

"If he's not in control of himself, then who is?"

"His inner hellhound? If those work like werewolves."

"And werecoyotes, and banshees."

"Does that analogy suggest any approaches to stopping him?"

"If that's how it works, he might be able to learn to control it..."

"...or work around it. Me and Scott can talk to him. Kira and Malia, you work out a strategy in case he's just hostile."

"Are you willing to help if it comes to a fight?"

"I have no principled objections."

"Me and Lydia can try to figure out what's going on with him, and everyone else can focus on planning to handle it if it goes badly, or researching the chimeras."

"Do you think you'll be able to find the mad science base with fairy powers?"

"My 'fairy powers' are telekinesis and indestructibility. I could lift the roof off every building in town and look inside, but somehow I doubt that is a practical option."

"We need to be proactive. We can't just wait for more people to get kidnapped. You guys stay here and think, me and Lydia are going to talk to Parrish."

And they go. 

"Okay, so let's start with the obvious. Water against fire? He's a shapeshifter, does he have the same sensitivity to sound that we all do? Stiles, do you remember anything unusual about him?"

"Besides the time someone tried to burn him alive and he completely ignored the flames? That's all I've got."

"I did not see any shapeshifing per se, he was always human-shaped. Just occasionally on fire."

"Most things are shapeshifters. Besides that, there's just banshees."

"I don't really think werewolves are anything like wendigos."

"And kitsune aren't much like werecoyotes, but we're all human-shaped until we're not." 

"There's no scientific body that rules on these issues."