Timeless is staging a second Supernatural reunion.

Just weeks after news of Jim Beaver’s recurring role, Misha Collins — who plays Castiel on the aforementioned CW series — is set to reunite with his former boss Eric Kripke on the time-hopping NBC drama, it was announced Monday.

Collins will play Untouchables leader Eliot Ness in the episode “Public Enemy No. 1.,” which finds Flynn traveling to 1931 Chicago to partner with gangster Al Capone (Tyrant‘s Cameron Gharaee). Lucy, Wyatt and Rufus, meanwhile, team up with the only man who can bring Capone down: federal law-enforcement agent Ness.

“When the Eliot Ness character first came up, I immediately thought of Misha, and I’m so thrilled to be working with him again,” Kripke said in a statement. “Misha brings his charisma, his talent, and frankly, all of his angelic qualities to the role.”

Collins tweeted about the news after it broke:

I worried the cast of @NBCTimeless might treat me as an Untouchable,but they gave me a warm reception.Thanks, guys. #Timeless @therealkripke pic.twitter.com/EK06PwL8Yo — Misha Collins (@mishacollins) January 16, 2017

Interestingly, Supernatural also featured Ness as a character (played by The X-Files‘ Nicholas Lea) in a Season 7 installment.

Timeless returns tonight at 10/9c on NBC; Collins’ episode airs Feb. 13.