Jensen Ackles is on board for The CW's Supernatural prequel series The Winchesters

Deadline

The Winchesters, which is in development at The CW, will revolve around Sam and Dean's parents, John and Mary Winchester, when they were young. Jensen Ackles and his wife, Supernatural recurring guest-star Danneel Ackles, will serve as executive producers. Jensen Ackles will also reprise his Dean Winchester role as narrator of the potential series. Former Supernatural co-executive producer Robbie Thompson will serve as The Winchersters' writer. "Before Sam and Dean, there was John and Mary," Deadline says of The Winchesters. "Told from the perspective of narrator Dean Winchester (Jensen Ackles), The Winchesters is the epic, untold love story of how John met Mary and how they put it all on the line to not only save their love, but the entire world." On Supernatural, Jeffrey Dean Morgan and Samantha Smith played John and Mary Winchester. “After Supernatural wrapped its 15th season, we knew it wasn’t over. Because like we say in the show, ‘nothing ever really ends, does it?,'” said Jensen Ackles. “When Danneel and I formed Chaos Machine Productions, we knew the first story we wanted to tell was the story of John and Mary Winchester, or rather the Supernatural origin story. I always felt like my character, Dean, would have wanted to know more about his parents’ relationship and how it came to be. So I love the thought of having him take us on this journey.”