Jesse L. Martin

The deadly plane crash in The Irrational was caused by a surprising culprit — and the fictional accident had some chilling similarities to real-life events.

Behavioral scientist Alec Mercer is committed to uncovering the truth about a deadly church bombing. 

Behavioral science professor Alec Mercer investigates whether a deadly plane crash was due to a suicidal pilot on the latest episode of The Irrational.

Jesse L. Martin knew he wanted to become an actor from a very young age.

The characters aren’t the only ones dressed up for The Irrational: A Canadian city plays the part of Virginia for the show, according to production designer Eric Fraser.

We keep track of the definitions of every scientific term Alec Mercer uses in NBC's new procedural, The Irrational.

Behavioral scientist Alec Mercer, played by Jesse L. Martin, raced against time to find out who poisoned a reporter — and why. 

Real-life former Russian intelligence officer and whistleblower Alexander Litvinenko is often cited as the man who solved his own murder after being poisoned with polonium-210.

The cinematographer and director of photography, Todd A. Dos Reis, also said the cast of The Irrational "is like a family."

In The Irrational, Jesse L. Martin plays Alec Mercer — someone who can help solve cases, but is haunted by a tragic one from his past.