According to spoilers for Episode 12, "As Time Goes By," a cult member named Henry will be traveling from 1958 to 2013. Henry joins the anti-demonic group in the past to protect his 7-year-old son.
Zap2It describes Henry as "'Robert Downey Jr. meets Cary Grant,'...dapper, smart, and considerably cocky." That is, until he rips open a time portal to 2013 and finds himself dazed and confused.
He's followed through the portal by 28-year-old Josie Sands, a "sexy, strong Katharine Hepburn type... with a secret." Sam and Dean happen upon the time travelers in their hunt for a demon, and, well, things don't go well.
Do you enjoy Supernatural's time travel episodes?