Kristin, from E!Online met with Mark Pellegrino, who played Nick and Lucifer last season and asked him if he will come back to replay his role on Supernatural.
Read his answer:
John in Tucson: Is Mark Pellegrino coming back to Supernatural?
Speak of the devil! We just asked Mark, who is now starring on Being Human (for which writer Jeremy Carver left Supernatural to helm), this very question. “I think that in the Supernatural realm anything is possible,” Mark told us, “but in the same token, it seems as if Lucifer used up the vessel. I was falling apart!” Mark laughed and added, “I’m hoping Nick has a resurgence and becomes a devil hunter.”
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