See Jensen Ackles & Eric Dane in Action-Packed Trailer for ‘Countdown’ From ‘Chicago Fire’ Co-Creator (VIDEO)

Meredith Jacobs May 28, 2025, 12:00 pm

There’s a new drama coming to streaming this summer from two people who know how to make successful television: Derek Haas, of the One Chicago franchise, created the series that was developed for Supernatural and The Boys‘ Jensen Ackles.

Countdown will premiere on Wednesday, June 25, with the first three episodes. The trailer, which was released on Wednesday, May 28, promises a show filled with plenty of action.

The series was ordered one year ago, in June 2024, by Prime Video. “I am thrilled to be working again with Jen Salke and Vernon Sanders and all the excellent people they’ve assembled at Prime Video,” said Haas at the time. “I love making shows that keep you on the edge of your seat with nonstop action, drama, surprises, and suspense, and I can’t wait to work with Jensen and for everyone to see Countdown.”

Added Ackles, “I had an incredible experience working with the Prime Video team on The Boys and am delighted to be able to continue that relationship on Countdown. I simply cannot wait to partner with Derek and the rest of our Countdown family to bring this story to life.”

Read on for everything we know so far about this new show.

When will Countdown premiere?

Countdown will premiere with the first three episodes on Wednesday, June 25. Episodes will then be released weekly, until the finale on Wednesday, September 3.

What’s Countdown about?

The logline reads: “When an officer with the Department of Homeland Security is murdered in broad daylight, LAPD detective Mark Meachum, portrayed by Ackles, is recruited to a secret task force, alongside undercover agents from all branches of law enforcement, to investigate. But the hunt for the killer soon uncovers a plot far more sinister than anyone could have imagined, kicking off a race against time to save a city of millions.”

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Who’s in the Countdown cast?

Joining Ackles in the cast are Jessica Camacho, Eric Dane, Violett Beane, Uli Latukefu, and Elliot Knight.

Ackles stars as Mark Meachum. Camacho plays DEA Special Agent Amber Oliveras, who has experience undercover and is “intrigued by this new opps team.” Dane stars as Special Agent in Charge Nathan Blythe, who “has a passion for fighting for justice” and “had already been looking into a potential deal going on with a foreign player trying to buy off DHS officers, but was denied when he tried to open an investigation.” He’s the one who has put together the team.

Beane stars as Evan Shepherd, who is tech-savvy and has recently graduated from the FBI Academy. Latukefu’s Lucas Finau is a veteran of the LAPD’s Gangs and Narcotics division. Knight plays Keyonte Bell from the FBI (third-generation agent), who has experience with terrorist threats.

Is there a Countdown trailer?

Yes, and you can watch it above. (You can also check out photos from the series here.)

As Blythe explains, this team was brought together because they’re the best. Their mission is to prevent a major attack planned in Los Angeles, and no one can know what they’re working on. Get a look at the undercover work, action, danger, team dynamics, and more in the trailer.