Experiment Proves How You Can Get Something for Nothing | The Irrational | NBC

Professor Mercer's Best Psychological Experiments | The Irrational | NBC

Alec and Rose Sing a Deadly Duet | The Irrational | NBC

Professor Mercer Teams Up with Bill Nye to Save a Stranded Astronaut | The Irrational | NBC

The Most Dangerous Game | The Irrational | NBC

Alec Sits Down with a Psychopath | The Irrational | NBC

Professor Mercer Reveals a Shocking Truth | The Irrational | NBC

Alec and Rose Witness a Deadly Hit-and-Run | The Irrational | NBC

Can a Horse Be Guilty of Murder? | The Irrational | NBC

Typicality Experiment Proves Memories Can't Always Be Trusted | The Irrational | NBC

Dr. Mercer's Dad Shows How to Win Over a Wary Witness | The Irrational | NBC

Female Magician Reveals the Greatest Illusion of All | The Irrational | NBC

Dr. Mercer Steers an Interrogation by Downplaying an Angry Curator | The Irrational | NBC

Marisa Shares Her Secret Origin Story | The Irrational | NBC

How to Trigger a Toxic K-Pop Troll Using Behavioral Science | The Irrational | NBC

Using Online K-Pop Drama to Explain Parasocial Relationships | The Irrational | NBC

Mercer's Team Debates the Pros and Cons of Getting Soaked with Fish Guts | The Irrational | NBC

Jesse L. Martin and the Cast Team Up for a Personality Quiz | The Irrational | NBC

Professor Mercer Fakes a Favor to Befriend Victim's Ex | The Irrational | NBC

Jesse L. Martin and the Cast Compete in a Surprise Pop Quiz | The Irrational | NBC

Jesse L Martin And The Cast Talk About Their Irrational Fear Of Spiders | The Irrational | NBC

The Most Frightening Cases From Season 1| The Irrational | NBC

Reading Nonverbal Cues Using Body Language | The Irrational | NBC

Professor Investigates Hockey Fight That Left One Player Dead on the Ice | Jesse L. Martin

Jesse L. Martin Brings Fans on the Ice in a Hockey Rink Crime Scene Breakdown | The Irrational | NBC

Alec Mercer Experiments on His Class to Prove Overconfidence Underperforms | The Irrational | NBC

Jesse L. Martin Talks False Teeth and Mistaken Identity in a Scene Breakdown | The Irrational | NBC

A Revenge Experiment's Results Hit Home When Alec Mercer Is Kidnapped | The Irrational | NBC

Jesse L. Martin Breaks Down a Scene of Alec Mercer Working a Suspect | The Irrational | NBC

Professor Mercer Tricks a Hot and Bothered Husband Into a Taped Confession | The Irrational | NBC

Jesse L. Martin Catches Fans Up on the Cases of Season 1 | The Irrational | NBC

Jesse L. Martin Goes Behind the Scenes of the Captivating New Season of The Irrational | First Look

Understanding the Mind to Solve the Crime | The Irrational | NBC

Get to Know Jesse L. Martin | The Irrational | NBC

Mercer and Marisa Identify FBI Rat | The Irrational | NBC

Mercer Uses the Trolley Problem to See If a Criminal Is Actually a Psychopath | The Irrational | NBC

Rational or Irrational? | The Irrational | NBC

Unexpected Livestream Death Shocks Mercer and His Sister | The Irrational | NBC

Get to Know Jesse L. Martin | The Irrational | NBC

Mercer Comforts a Fellow Burn Victim | The Irrational | NBC

Jesse L. Martin Unpacks The Irrational | NBC

The Irrational | Official Trailer | NBC

Sentimental Killer Attends an Art Auction | The Irrational | NBC

Jesse L. Martin's Best Moments as Alec Mercer on The Irrational | NBC

This Is How Bias Works | The Irrational | NBC

How to Catch a Gambling Cheater at a Las Vegas Casino | The Irrational | NBC

Body Language Reveals an Affair Between Two Colleagues | The Irrational | NBC

Mercer Demonstrates That We See and Hear What We Want to See and Hear | The Irrational | NBC

Meet the Cast of The Irrational| NBC | The Irrational

Jesse L. Martin Returns as an “Emotional Detective” | NBC | The Irrational

Can Mercer Read the Body Language of a Murderer? | The Irrational | NBC

Alec Mercer Interrogates a Marine Who Believes He Murdered His Girlfriend | The Irrational | NBC

The Irrational | First Look | NBC