The Irrational season 2: release date, cast, plot and everything we know

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Jesse L. Martin returns as a brilliant professor with a knack for getting inside peoples' heads.

Jesse L. Martin sits at a table in The Irrational
(Image credit: Sergei Bachlakov/NBC)

Following the success of The Irrational season 1, NBC quickly ordered up another season of the crime drama that centers on Professor Alec Mercer (Jesse L. Martin), behavioral scientist and leading expert on human behavior based on the book Predictably Irrational by Dan Ariely. 

While the 2024 fall television landscape is once again peppered with procedurals, The Irrational season 2 is set to offer a sexy, fresh twist on the genre. Watching Professor Mercer solving crimes is just as enjoyable as watching him navigate his personal life. Mercer is the guy the police and governmental agencies call when they're trying to figure out the "why" as much as the "how" of a crime; through behavioral analysis, Mercer and his team are always able to provide key insight into the toughest of cases.

Here's everything we know about The Irrational season 2.

The Irrational season 2 release date

The Irrational season 2 premiere is Tuesday, October 1. The series will follow The Voice on Tuesdays in the 10 pm ET/PT time slot on NBC, with new episodes becoming available the following day on Peacock. 

We don't have a release date for UK viewers just yet, but as soon as we have more information we'll have it for you right here. 

If you've cut the cord, you can watch NBC through DirecTV Stream, Hulu with Live TV, Fubo, Sling TV and YouTube TV. 

The Irrational season 2 plot

Here's the official synopsis of The Irrational season 2 from NBC: 

"The Irrational  follows world-renowned professor of behavioral science Alec Mercer (Jesse L. Martin) as he lends his unique expertise to high-stakes cases and mysteries. His insight and unconventional approach to understanding human behavior lead him to work alongside varying clients ranging from the FBI to everyday people caught in perplexing situations desperate for answers. With the help of his trusted team and social-science experiments, Alec solves crimes and uncovers the truth to answer intriguing, and irrational, questions. "

The Irrational season 2 cast

The Irrational season 2 features Jesse L. Martin (Rent, The Flash) as Professor Alec Merce, Maahra Hill (Delilah) as Marisa Clark, Travina Springer (Ms. Marvel) as Kylie, Molly Kunz (Widows) as Phoebe and Arash DeMaxi (Partner Track) as Rizwan. 

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Jesse L. Martin as Prof. Alec Mercer in The Irrational
Jesse L. Martin in The Irrational (Image credit: Sergei Bachlakov/NBC)

The Irrational season 2 trailer

There's no trailer for The Irrational season 2 just yet, but as soon as one is available we'll have it for you right here. 

Sarabeth Pollock
Sarabeth Pollock
Editorial Content Producer

 

Sarabeth joined the What to Watch team in May 2022. An avid TV and movie fan, her perennial favorites are The Walking Dead, American Horror Story, true crime documentaries on Netflix and anything from Passionflix. You’ve Got Mail, Ocean's Eleven and Signs are movies that she can watch all day long. She's also a huge baseball fan, and hockey is a new favorite.  

When she's not working, Sarabeth hosts the My Nights Are Booked Podcast and a blog dedicated to books and interviews with authors and actors. She also published her first novel, Once Upon an Interview, in 2022.