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Is The Irrational New Tonight? (January 14, 2025)

Mercer and his team never back down from a befuddling puzzle on NBC's The Irrational.

By Jessica White
Reading Nonverbal Cues Using Body Language | The Irrational | NBC
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Reading Nonverbal Cues Using Body Language | The Irrational | NBC
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Female Magician Reveals the Greatest Illusion of All | The Irrational | NBC
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Dr. Mercer Steers an Interrogation by Downplaying an Angry Curator | The Irrational | NBC
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Marisa Shares Her Secret Origin Story | The Irrational | NBC
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How to Trigger a Toxic K-Pop Troll Using Behavioral Science | The Irrational | NBC
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Using Online K-Pop Drama to Explain Parasocial Relationships | The Irrational | NBC
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Mercer's Team Debates the Pros and Cons of Getting Soaked with Fish Guts | The Irrational | NBC
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Jesse L. Martin and the Cast Team Up for a Personality Quiz | The Irrational | NBC
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Professor Mercer Fakes a Favor to Befriend Victim's Ex | The Irrational | NBC
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Jesse L. Martin and the Cast Compete in a Surprise Pop Quiz | The Irrational | NBC
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Jesse L Martin And The Cast Talk About Their Irrational Fear Of Spiders | The Irrational | NBC
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The Most Frightening Cases From Season 1| The Irrational | NBC
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Jesse L. Martin Brings Fans on the Ice in a Hockey Rink Crime Scene Breakdown | The Irrational | NBC
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Professor Investigates Hockey Fight That Left One Player Dead on the Ice | Jesse L. Martin
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Alec Mercer Experiments on His Class to Prove Overconfidence Underperforms | The Irrational | NBC
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Jesse L. Martin Talks False Teeth and Mistaken Identity in a Scene Breakdown | The Irrational | NBC
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A Revenge Experiment's Results Hit Home When Alec Mercer Is Kidnapped | The Irrational | NBC
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Jesse L. Martin Breaks Down a Scene of Alec Mercer Working a Suspect | The Irrational | NBC

Season 2 of The Irrational has been an emotional rollercoaster, but with the talented Dr. Alec Mercer (Jesse L. Martin) at the helm of the NBC drama, viewers can bet on plenty of suspense and thrills.

How to Watch

Watch The Irrational Tuesdays at 10/9c on NBC and next day on Peacock

Dr. Mercer and his behavioral experts have kept viewers on the edge of their seats with their heroic pursuit of understanding, dissecting the psychological motive behind the most baffling crimes. Whether it's a mysterious murder scene or a social conspiracy, Mercer understands how people tick, and his expert intel has led to some seriously gripping storylines this season.

"There are so many possibilities when it comes to just concentrating on how we think and how we behave," Martin told Collider. "Mental health is a big topic on everybody's platforms these days, and our show explores it, certainly in a scripted context, but in so many different ways with so many different people. The more interesting actors we get in, the more that behavior surfaces... There are so many places to get creative. There are so many stories that can get told when you're just talking about behavior, in general."  

RETURN: Here's When New Episodes of The Irrational Return in 2025

Learn where and when to watch new episodes of NBC's The Irrational Season 2 below.

Rose Dinshaw and Alec Mercer stand in a house in The Irrational Episode 111.

Is The Irrational new tonight, January 14, 2025?

Yes!

The logline for the January 14 episode of The IrrationalSeason 2, Episode 9 ("Another Man's Treasure") — teases: "Alec and Marisa investigate a museum heist, and a curator and his son might hold the key; the case raises ethical questions about the controversial practice of buying and selling cultural artifacts, which brings old memories for Marisa."

Alec Mercer (Jesse L. Martin) in Season 2 Episode 1 of The Irrational.

When do new episodes of The Irrational Season 2 air?

New episodes of The Irrational Season 2 air on Tuesdays at 10/9c on NBC, right after new episodes of Night Court and Deal or No Deal Island.

The logline for The Irrational's January 21 episode — Season 2, Episode 10 ("Now You Don't") — reads: "Alec brings Rose on a date to a magic club he frequents where a friend is the headliner; the evening turns deadly when an audience volunteer is inexplicably killed onstage, and seemingly by magic."

Marisa Kylie and Rose all talk to alec in a hospital bed in The Irrational Season 2, Episode 9.

RELATED: Everything to Know About NBC's Drama The Irrational Starring Jesse L. Martin

Where can I watch old episodes of The Irrational?

Every previously aired episode of The Irrational is available to stream on Peacock, NBC's streaming service.

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