Ep 4. Hell Hath No Fury

In "Hell Hath No Fury," the fourth episode of Castle season 1, Richard Castle (Nathan Fillion) and Detective Kate Beckett (Stana Katic) are tasked with investigating the murder of a prominent divorce lawyer, who is found dead in his office with a gunshot wound to his head. The case takes them into the world of high-stakes divorce battles, where emotions run high and secrets are kept close to the chest.

As Castle and Beckett begin to piece together the victim's personal and professional life, they discover that he was a master manipulator who preyed on vulnerable clients and would stop at nothing to win his cases. They also learn that the victim had recently taken on a particularly contentious divorce case involving a wealthy husband and his scorned wife, who is now the prime suspect in the murder.

With the help of Castle's expertise in human behavior and psychology, the duo delves deeper into the inner workings of the divorce case and the victim's history with his client. As the investigation progresses, they encounter a number of suspects, each with their own motives and alibis, raising the question of whether the true killer has yet to be revealed.

Meanwhile, Castle is dealing with his own romantic entanglements as he grapples with his feelings for his ex-wife, who happens to be the mother of his teenage daughter, Alexis (Molly Quinn). This dynamic adds an extra layer to the investigation, as Castle is forced to confront his own biases and motivations as a writer and a man.

As the investigation reaches its climax, Castle and Beckett narrow their focus to a key suspect, but a shocking twist turns the case on its head, leaving them scrambling to uncover the truth before it's too late. In the end, they learn that sometimes the greatest mystery is the human heart, and that the truth can be a painful and complicated thing to confront.

"Hell Hath No Fury" is a thrilling and emotional episode of Castle that showcases the chemistry and wit of its two leads, as well as the complex and nuanced storytelling that would become a hallmark of the series. With its blend of crime procedural, character drama, and romantic tension, it exemplifies why Castle was one of the most beloved shows of its time.