Supernatural's Tim Omundson headed back to Vancouver on Friday.

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The former Psych star debuted as Cain during season 9, and Omundson will fill that role once more during the second half of season 10.

"Why am I going to Vancouver? A) PSYCH reunion B) Bringing Cain back to #SUPERNATURAL C) Extradition Hint: Not A or C," Omundson wrote on Friday.

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Set to appear in episode 14, the Father of Murder will continue further the Mark of Cain storyline. Dean ditched his black eyes in "Soul Survivor," but the pesky brand is turning him into a ruthless cold-blooded killer. While Dean swore he would use the Mark to off Cain, he may have to renege on that promise if he wants to put the whole affair behind him.

Whatever the case, Omundson believes the tension will be cranked up a notch.

"I can guarantee you it's going to get pretty intense," Omundson told AfterBuzz TV .

Find out more when Supernatural returns to The CW on Jan. 20. Click the video below to see a preview for the series' next episode, "The Hunter Games."

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