Episode: 3×15 (Season 3 Episode 15)
Name: Time Is On My Side
Originally Aired: May. 08, 2008

Plot: Sam and Dean investigate zombies in a small Pennsylvania town, where they find a doctor (Billy Drago) with a sinister agenda. Meanwhile, Bobby learns where Bela (Lauren Cohan) is hiding, so Dean confronts her, leaving Sam to deal with the doctor.