S1, E21: After Sam has a vision of a family being attacked in the same manner as his mom was, the brothers and their father, John (recurring guest star Jeffrey Dean Morgan), head to Salvation, Iowa, to save the family Sam dreamed of and finally kill the demon using the antique gun they recently acquired. However, Meg (recurring guest star Nicki Aycox) warns that she will start killing the Winchesters' friends unless they return the gun. John meets Meg to deliver a fake gun while the boys are left to deal with the demon.