Derek stares down the path leading into the forest; he knows something's living down there, hunting the people of Beacon Hills, and by God, he's going to find out what it is.

"Hey, wait up!" Stiles calls behind him.

Derek turns to see him jogging up, baseball bat in hand, and he stops a few feet away from Derek to catch his breath.

"Stiles, what are you doing here?" Derek asks.

"What, you think I'm letting you go after that thing alone?" Stiles straightens up and hefts the baseball bat onto his shoulder. "I've got a bat and a cell phone with a full battery. Let's do this thing."

Derek thinks about arguing, but he just shakes his head and starts down the path.

Stiles is right beside him the entire way.