The Irrational Season 2: Complete Cast List and Characters

NBC’s crime-drama series, The Irrational, debuted in September 2023, featuring Jesse L. Martin in the lead role of Professor Alec Mercer. The show captivates audiences with intricate cases that intertwine the efforts of local law enforcement with the FBI. Mercer serves as a consultant to these agencies, characterized by the synopsis:

“Alec Mercer is a globally recognized behavioral scientist who utilizes his unique perspective on human behavior to assist with a variety of significant cases related to government, law enforcement, and corporate sectors.”

The inaugural season comprised 11 episodes, and by November 2023, the series was confirmed for a second season. Season 2 of The Irrational premiered in October 2024, currently offering two episodes accessible for streaming across various platforms. This new season showcases an exceptional cast alongside Martin, including Maahra Hill and Travina Springer.

Main Cast of The Irrational Season 2

1) Jesse L. Martin as Alec Mercer

Jesse L. Martin at The Paley Center For Media's 32nd Annual PALEYFEST LA - 'Arrow & The Flash' - Arrivals. — Jesse L. Martin at The Paley Center For Media’s 32nd Annual PALEYFEST LA – ‘Arrow & The Flash’ – Arrivals. (Image via Getty)

Jesse L. Martin portrays the lead character, Alec Mercer. He has participated in every episode so far, embodying a gifted behavioral scientist frequently enlisted by the FBI and local agencies for his expertise.

Martin’s extensive resume includes roles in notable crime dramas such as Law & Order and Smash, in addition to his involvement in the series The Flash, The Philanthropist, and Rent: Live.

2) Maahra Hill as Marisa Clark

Maahra Hill at 2024 TCA Summer Press Tour - NBCUniversal. — Maahra Hill at 2024 TCA Summer Press Tour – NBCUniversal. (Image via Getty)

Joining Martin, Maahra Hill is another actress featuring in every episode of The Irrational. She plays FBI Agent Marisa Clark, who serves as Mercer’s most significant ally in the narrative.

Additionally, Marisa is Alec Mercer’s ex-wife, resulting in a complex dynamic between the two throughout the series. Hill’s previous credits include popular shows such as Black-ish, Delilah, and How to Get Away with Murder.

3) Travina Springer as Kylie

Travina Springer has participated in all but one episode of The Irrational. She portrays Kylie Mercer, Alec’s younger sister, who is also his only remaining family member. The sibling bond is evident as they both support one another.

Springer’s impressive body of work includes roles in Ms. Marvel, Strange Angel, and more, indicating her involvement in the Marvel Cinematic Universe and her potential for future appearances in Marvel productions.