Jon Gries will return as Martin Creaser, a hunter who used to help out Big Daddy Winchester. We saw him in the Supernatural Season 5 episode "Sam, Interrupted," where he was committed to a mental institution after he couldn't handle the trauma of hunting anymore.
Martin is now out of the loony bin and back on the job. Zap2It reports these spoilers for this season's "Citizen Fang,"
"Sam asks Martin to keep an eye on Benny after some unexplained deaths in Benny's hometown. Dean won't be particularly happy about it -- and when Martin finds out that a Winchester has teamed up with a vampire, he will not be impressed."
Looks like Benny is going to cause Dean all sorts of trouble! Are you happy Martin will be back?