Every BAU Agent, Returning Villain, and Buzzworthy Guest Star Joining ‘Criminal Minds: Evolution’ Season 19

The BAU is back, and this time the stakes feel more personal than ever. ‘Criminal Minds: Evolution’ Season 19 officially premiered on Paramount+ on May 28, 2026, and the fandom has been loud about it. The new chapter arrives carrying the emotional weight of last season’s gut-punch finale, a brand-new villain lurking in Sicarius’s shadow, and one of the most stacked guest rosters the show has assembled in years.

For longtime followers of the franchise, ‘Criminal Minds: Evolution‘ has made a habit of threading serious character drama through its procedural backbone. Season 19 doubles down on that formula, leaning into grief, legacy, and what it means when a monster becomes someone else’s inspiration. Add a wave of wildly exciting guest castings to the mix, and the conversation around this season has been impossible to ignore.

The Core BAU Lineup Is Intact and Ready for Action

Returning for Season 19 are Joe Mantegna as David Rossi, Paget Brewster as Emily Prentiss, A.J. Cook as JJ Jareau, Adam Rodriguez as Luke Alvez, Kirsten Vangsness as Penelope Garcia, Aisha Tyler as Dr. Tara Lewis, Zach Gilford as Elias Voit, and RJ Hatanaka as Tyler Green. That full ensemble returning together signals a season of continuity rather than reinvention, which fans of the serialized Evolution format have come to appreciate deeply.

The emotional center of the season falls squarely on A.J. Cook’s JJ. In a Season 18 episode, JJ’s husband Will collapsed after experiencing a headache, and the team rushed to the hospital only to find out that Will didn’t make it.

Cook has spoken openly about how the show plans to handle that loss going forward, describing it as something that will ripple through every episode rather than resolve neatly in a single arc.

As Cook shared, “This never goes away. This now has shaped her into this new single mother, and it will continue shaping her as she now learns to work through life this way. So I’m excited to see what that looks like for her. It’s been a journey already, and it’ll continue to be a journey in ‘Criminal Minds’ form.” That kind of raw, serialized grief is exactly what has set the Evolution era apart from the original procedural run.

Elias Voit Returns as Reluctant Resource and Unlikely Key to Catching the Copycat

Zach Gilford’s Elias Voit remains one of the most compelling additions the Evolution era has made to the ‘Criminal Minds’ universe, and Season 19 reimagines his role in a bold new direction. According to a press release, the BAU continues investigating disturbing new cases while Voit tries to make amends for his past crimes. His growing notoriety unintentionally sparks a far more dangerous threat: a methodical and lethal admirer known only as “The Fan,” a copycat UnSub who becomes fixated on surpassing Voit.

Showrunner and executive producer Erica Messer confirmed that Voit will appear in every episode of Season 19, describing him as “a prisoner again, but in a very different way than he was in season 17” and noting that “he will be a resource for us.”

That shift from antagonist to reluctant asset is a narrative pivot the show has been building toward, and it gives Gilford room to show genuine new dimensions of the character.

Messer told Parade, “I always felt like we had this unfinished business from Season 1 with Voit,” adding, “I really felt it was important to dive back into that.” Gilford himself has teased the challenge and excitement of the new dynamic, describing a version of Voit who has lived through consequences and is now forced to confront his own legend from the inside.

The Guest Star Roster Is a Fandom Fever Dream

This is where Season 19 of ‘Criminal Minds: Evolution’ really starts generating serious buzz. Paramount+ confirmed that the guest roster includes Connor Storrie, Justin Kirk, Yvette Nicole Brown, Clark Gregg, Paul F. Tompkins, Cress Williams, Kofi Siriboe, Lyndon Smith, Richard Cabral, Jeri Ryan, Rob Yang, Nicholas Gonzalez, Inny Clemons, Nicole Pacent, Dash Mihok, Joseph Cross, and Cara Jade Myers. That is a genuinely extraordinary collection of television talent landing in a single season.

Clark Gregg, known for being a very different kind of agent in the Marvel Cinematic Universe, will make his ‘Criminal Minds’ debut. Yvette Nicole Brown will work with Paget Brewster for the first time since their ‘Community’ days.

Jeri Ryan, famous for her portrayal of Seven of Nine in ‘Star Trek: Voyager’ and ‘Star Trek: Picard’, takes on a more grounded role. Nicole Pacent returns as prosecutor Rebecca Wilson, while Paul F. Tompkins returns to the role of conspiracy theorist Brian Garrity.

Connor Storrie, fresh off his breakout role in the queer hockey romance ‘Heated Rivalry’, has been tapped to guest star, with details about his character still under wraps. The outlet noted that considering the show’s track record, “guest star could mean anything from victim to super-villain, and if all goes well, his guest status could easily be upgraded to series regular,” much like Gilford’s own trajectory from recurring guest to central figure.

Season 20 Is Already Locked In, and the Franchise Shows No Signs of Slowing Down

The momentum behind ‘Criminal Minds: Evolution’ right now is remarkable for a franchise that began its original run back in 2005. The series was renewed for Season 19 on March 5, 2025, two months ahead of the Season 18 premiere date, and the Season 20 renewal came early as well, arriving two months before Season 19’s premiere. That kind of aggressive advance renewal signals genuine confidence from Paramount+ in the show’s streaming performance and audience loyalty.

Matthew Gray Gubler returned as Dr. Spencer Reid for one episode of Season 18 and will have a new project on CBS in the coming season, so fans will have to wait and see whether he resurfaces again in the ‘Criminal Minds’ universe. His brief return proved the original audience is still deeply invested, and any future appearance would almost certainly be appointment television for the fandom.

The combination of a grief-driven character arc for JJ, Voit’s unprecedented pivot to consultant, and a villain designed specifically to outshine his idol gives Season 19 of ‘Criminal Minds: Evolution’ one of its most narratively ambitious setups yet. With a guest roster that reads like a wishlist and a fanbase that has only grown since the Evolution relaunch, the only real question is which of this season’s guests you are most hoping survives long enough to come back.