Kate: You look like a lost puppy
Scott: Just looking for the bathroom
Kate: Bathroom? Does that look like a bathroom?
Scott: No
Kate: No use the guest bedroom
Scott: Okay thanks

Scott looks in Kate's bag

Animal Clinic

Stiles receives Scott's message

Stiles: Does northern blue monkshood mean anything to you?
Derek: It's a rare form of wolfsbane. He has to bring me the bullet.
Stiles: Why?
Derek: 'Cause I'm gonna die without it