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Here’s When New Episodes of The Irrational Return in 2025

What perplexing case will Mercer tackle next onThe Irrational?

By Jessica White
Mercer's Team Debates the Pros and Cons of Getting Soaked with Fish Guts | 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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Experiment Proves How You Can Get Something for Nothing | The Irrational | NBC
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Professor Mercer's Best Psychological Experiments | The Irrational | NBC
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Alec and Rose Sing a Deadly Duet | The Irrational | NBC
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Professor Mercer Teams Up with Bill Nye to Save a Stranded Astronaut | The Irrational | NBC
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The Most Dangerous Game | The Irrational | NBC
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Alec Sits Down with a Psychopath | The Irrational | NBC
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Professor Mercer Reveals a Shocking Truth | The Irrational | NBC
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Alec and Rose Witness a Deadly Hit-and-Run | The Irrational | NBC
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Can a Horse Be Guilty of Murder? | The Irrational | NBC
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Typicality Experiment Proves Memories Can't Always Be Trusted | The Irrational | NBC
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Dr. Mercer's Dad Shows How to Win Over a Wary Witness | 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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Jesse L. Martin and the Cast Team Up for a Personality Quiz | The Irrational | NBC

NBC's riveting drama The Irrational has quickly captured viewers with its unique blend of psychological thrills and high-stakes investigations, and viewers are eager for more gripping episodes from Season 2. 

How to Watch

Watch The Irrational on NBC and Peacock

Starring the charismatic Jesse L. Martin as behavioral science expert Dr. Alec Mercer, the series delves into the fascinating complexities of human decision-making and has kept audiences on the edge of their seats with its engrossing storylines. Mercer's unparalleled expertise in psychology allows him to expertly untangle perplexing mysteries, leading him to team up with local law enforcement. Whether he's consulting on criminal investigations or exposing corporate conspiracies, Mercer's insights provide an intriguing lens into the human mind. Each week, fans of The Irrational navigate a range of scenarios as Mercer uncovers the truth about some of the most mind-boggling cases.

RELATED: The 2024-2025 NBC Midseason Schedule Is Here: All the Shows Premiering 

Season 2 of The Irrational has raised the stakes as Mercer and his dedicated team handle whatever baffling case comes their way and fans are on the edge of their seats to see what happens next. Get the details about when The Irrational will return in 2025, below.

Alec Mercer and Kylie sit amongst funeral attendees in The Irrational Episode 111.

When will new episodes of The Irrational return on NBC?

Season 2 of The Irrational will resume on Tuesday, January 7, 2025, at 10/9c on NBC.

"We are so lucky and privileged to have Jesse Martin playing the role of Alec," showrunner and executive producer Arika Lisanne Mittman told NBC Insider ahead of Season 2. "When I first wrote this character, there was a character I wrote on paper and there's what Jesse brought to it and those two things put together have just created magic and I'm so grateful to have him. He's wonderful to work with. He's really a gift to all of us."

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

Where can you watch and stream episodes of The Irrational?

During the holiday hiatus, you can stream episodes of The Irrational on Peacock.

RELATED: Professor Myers Confronts Phoebe with a Veiled Threat on The Irrational (EXCLUSIVE)

"These shows are a testament to the incredibly passionate work of our showrunners Nkechi Okoro Carroll (Found) and Arika Lisanne Mittman (The Irrational), both of whom have executed their visions flawlessly," Lisa Katz, President, Scripted Content, for NBCUniversal Entertainment said. "A huge thank you to the talented cast, producers, and crews for their tireless commitment and dedication, which has clearly paid off with audiences making these series must-see television on both NBC and next day on Peacock."

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