‘The Irrational’ Episode 4 Photos, Cast, and “Zero Sum” Trailer

A desperate dad asks Professor Mercer for help on NBC’s The Irrational season one episode four. “Zero Sum” is set to air on Monday, October 16, 2023 at 10pm ET/PT.

Jesse L. Martin stars as Professor Alec Mercer, Maahra Hill is Marisa, Travina Springer is Kylie, Molly Kunz is Phoebe, and Arash DeMaxi plays Rizwan. Executive producers include Arika Lisanne Mittman, Mark Goffman, Sam Baum, and David Frankel.

“Zero Sum” Plot: Alec and the team take on a kidnapping case at the request of a desperate father. Their investigation is hampered by a complicated family dynamic that slowly reveals everyone’s hidden motivations.

Season 1 Description, Courtesy of NBC:

A new spin on the procedural genre, The Irrational follows world-renowned professor of behavioral science Alec Mercer (Martin) as he lends his unique expertise on an array of high-stakes cases involving governments, law enforcement, and corporations. His insight and unconventional approach to understanding psychology and human behavior lead him and the team on a series of intense, unexpected journeys to solve illogical puzzles and perplexing mysteries.

• The Irrational Series and Episode 1 Preview
• The Irrational Season 1 Episode 2 “Dead Woman Walking” Preview
• The Irrational Season 1 Episode 3 “The Barnum Effect” Preview
• The Irrational Season 1 Episode 5 “Lucky Charms” Preview
• The Irrational Season 1 Episode 6 “Point and Shoot” Preview
• The Irrational Season 1 Episode 7 “The Real Deal” Preview
• Season 1 Episode 8 “Scorched Earth” Preview
• Season 1 Episode 10 “Bombshell” Preview
• Season 1 Episode 11 “Reciprocity” Finale Preview