1x21 Salvation

As Meg begins to target the Winchesters' friends in order to force them to hand over the Colt, John reveals to his sons the research on Azazel that he has accumulated over the years. Signs point to Salvation, Iowa, as the location of the demon's next target, so the trio heads there to investigate. After Sam has a premonition, he is able to identify the next victim. Before they can formulate a plan, Meg calls and threatens to kill more of their friends unless they hand over the gun. John concedes to her demand, but tries to deliver a fake one, and is captured. Meanwhile, Sam and Dean are able to save the family from Azazel, but he escapes before they can kill him. At the end of the episode, Sam and Dean learn of their father's capture when they call him and Meg answers the phone instead.