Warning: This article contains spoilers about Thursday’s episode ofSupernatural.
He wasn’t back for long, but his return still made an impact.
Thefourth episodeofSupernatural’sfinal seasonkicked off with a dreamor was it a vision?of Sam’s.

Credit: Diyah Pera/The CW
In that dream, Dean is seen making his way through the bunker’s hallways killing demon after demon.
“It was just written as a soldier,” Ackles recalls.
“I was like, ‘Can we get a familiar face, somebody that we know?’

Diyah Pera/The CW
So they sent over a couple of names of people from the past.
I think one was Donna or Jody or Bobby.
Then I was like, ‘What about Ty [Olsson]?'”
He was last seen on the show in season 10.
“He was like, ‘I’m in Calgary.
So he came in and literally he was there for a few hours and knocked it out.
It was so cool having him there.
It was like he’d never left.”
Supernaturalairs Thursdays at 8 p.m.
ET on The CW.