Dr. Valack (about Dread Doctors): They were scientists once. Scientists who worshipped the supernatural. They found their secrets in electromagnetic forces. Ways to prolong their lives, give them power, and most importantly, making you forget you ever saw them.
Dr. Valack: It's not just a book.
Lydia Martin: What is it?
Dr. Valack: A tool. Designed to open your eyes.
Stiles Stilinski: To what?
Dr. Valack: To them. The Dread Doctors.
Stiles Stilinski: I'm not letting you go to a place where once of the orderlies almost killed you.
Lydia Martin: He almost killed you too.
Stiles Stilinski: And we're both still alive. See? Teamwork.
Theo Raeken: You guys do this a lot, huh?
Scott McCall: Do what?
Theo Raeken: Get involved.
Scott McCall: Yeah, I guess.
Melissa McCall: You know, your grandfather used to have a saying about the word should. You know what you're doing when you say should too often? You're shoulding all over yourself.
Melissa McCall: A sting this bad means that he should have been dead 10 hours ago, and the scorpion that stung him would have been 10 feet tall.
Mason Hewitt: Considering the state of my dating life, I need a wingman, co-pilot and a really hot flight attendant.
Liam Dunbar: I'm his flight attendant.
Dr. Alan Deaton: Someone is trying to make supernatural creatures with non-supernatural means. Protect your friends. Protect each other. Something like this shakes you to the core. The rules have changed.
Dr. Alan Deaton (to Sheriff Stilinski): I think the coroner might be very confused by this girl's severed reptilian tail.