It seems that a veteran character actor could be reprising his brief guest-starring role in a popular CW series. Ausiello Files is reporting that Mitch Pileggi could return to Supernatural as the Winchester brothers' grandfather, Samuel Campbell.
Pileggi only appeared on one episode of the series, In the Beginning in Season 4, a flashback episode where Castiel (Misha Collins) sends Dean (Jensen Ackles) back to 1973 where he meets his grandfather, Samuel Campbell. Here's what the site had to say about Pileggi's return.
"Sources confirm to me exclusively that X-Files vet Mitch Pileggi is in talks to reprise his role as Sam and Dean's presumed-dead grandpa on a potentially recurring basis.