Check out the official guide for Supernatural Season 8 Episode 12, "As Time Goes By," in which the boys meet their grandfather, airing January 30 on the CW.
SAM AND DEAN MEET THEIR GRANDFATHER
- Sam (Jared Padalecki) and Dean (Jensen Ackles) are stunned when a man who claims to be Henry Winchester (guest star Gil McKinney), their grandfather, suddenly appears in their hotel room demanding to know where he can find John Winchester.
- Henry has time-traveled to stop a demon named Abbadon (guest star Alaina Huffman) and was looking for John’s help.
- Through Henry, Sam and Dean learn more about their father and the Winchester blood line.