The Irrational Season 2 episode 2 ending explained: Who is the killer?

The Irrational Season 2 (Image via NBC network)
The Irrational Season 2 (Image via NBC network)

The Irrational season 2 premiered on NBC on October 8, 2024. The crime drama is written by David Frankel and directed by Jennifer Morrison. The series follows Dr. Alec Mercer, a brilliant behavioral scientist who uses his unique understanding of human psychology to solve complex crimes.

The plot of episode 2 revolves around a serial killer on the loose, who leaves a chilling signature by smashing the veneer teeth of his victims. Episode 2 Kick In the Teeth is named after this specific signature.

Disclaimer: This article contains spoilers from Irrational season 2 episode 2. Reader discretion is advised.


What is Kick In the Teeth in The Irrational season 2?

A still from The Irrational Season 2 episode 2 (Image via NBC network)
A still from The Irrational Season 2 episode 2 (Image via NBC network)

Irrational season 2, episode 2, titled Kick in the Teeth, starts with Alec Mercer beginning to connect the dots in a chilling case as he has to face a serial killer who disguised his murders as robberies. After analyzing the unusual details of the murders, Alec realizes that the killer’s choice to smash the victims' veneer teeth isn’t random. It’s a deeply personal message.

This killer is not like the usual kind, he picks victims for reasons that aren't clear right away, making the case more complex. Alec notes that the killer chooses affluent victims, which is different from most serial killers who target people who won't be missed, highlighting how calculated they can be. The show even introduces the idea that the victims might share a genetic condition affecting their teeth, which adds a unique twist.


Who is the killer and what were his motives behind the killings?

A still of Eric Dent from The Irrational Season 2 episode 2 (Image via Jio cinema TV network)
A still of Eric Dent from The Irrational Season 2 episode 2 (Image via Jio cinema TV network)

As The Irrational season 2, episode 2 progresses, Alec and his team dig deeper into the case, and they uncover a critical clue that all five victims share the same genetic background. They are donor siblings, linked by the same biological father, Steve Thomas. This discovery leads Alec to Steve, a wealthy man who planned to divide his $50 million fortune among his children after his death. Suspicion grows that one of these donor siblings might be killing the others to increase their share of the inheritance.

Alec and his team track down the remaining donor siblings, which brings them to Eric Dent, a patrol officer. Eric is revealed to be Steve's biological son, but his motives are more complex than just inheritance. Eric wanted revenge on Steve for abandoning his mother when she was sick and in need of financial help. After his mother’s death, Eric felt betrayed and began his killing spree. He also smashed the victims' veneer teeth because they shared the same genetics, a symbolic way of destroying their connection to Steve.

This twist adds an emotional layer to the case, showing that Eric's actions were driven by deep resentment rather than greed alone, making the story both intriguing and tragic.


Overview of episode 2 of The Irrational season 2

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In The Irrational season 2 episode 2, Alec and his team take on the case of a serial killer targeting high-profile victims. The investigation reveals that the victims were donor siblings, all biologically connected to Steve Thomas, a wealthy man planning to divide his fortune among his children.

Suspicion initially falls on one of the siblings, who might be killing the others to increase their inheritance. However, Alec uncovers that the true killer is Eric Dent, Steve's son. Eric's motive is not greed but revenge he blames Steve for neglecting his sick mother and, after her death. Alec's assistants add some humor, lightening the mood during intense moments.

Meanwhile, Phoebe’s subplot adds an emotional touch as she discovers that her friend Ava has been secretly writing for Rachel Myers. This personal storyline adds depth, showing that relationships can be just as fascinating as the investigation. The episode also hints at a new direction for Marisa, who is being considered for the FBI head position.


The Irrational season 2 is available on NBC network and Peacock. Stay tuned for more details about the upcoming installments.

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Edited by Bharath S
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