Ep 11. Under Fire

In season 6 episode 11 of Castle titled "Under Fire," the New York City Fire Department is in crisis mode as a series of arson attacks wreak havoc across the city. Castle and Beckett find themselves in the middle of the chaos when they get called to a crime scene where a renowned arson investigator has been murdered. As they work to solve the case, they realize that they may have stumbled upon a conspiracy that goes far beyond just some petty arson attacks.

To make matters worse, Castle and Beckett discover that one of their own may be in danger as the arsonist targets firehouses around the city. As they race against time to catch the culprit before anyone else gets hurt, they must also deal with the fallout from their own personal lives. Beckett struggles with the aftermath of her recent shooting while Castle has to navigate his relationship with his daughter and his newfound responsibility as a father figure.

Throughout the episode, the tension builds as Castle and Beckett dig deeper into the case and come closer to uncovering the truth about the arsonist's motive. Along the way, they encounter a cast of memorable characters, including a volatile arson suspect with a history of mental illness, a seasoned fire chief with a secret agenda, and a corrupt businessman with ties to the underworld.

As the episode reaches its climax, Castle and Beckett find themselves trapped in a burning building with no way out. With their lives on the line and time running out, they must rely on their instincts and their love for each other to survive the inferno and bring the arsonist to justice.

"Under Fire" is an action-packed and emotional episode that will keep viewers on the edge of their seats from start to finish. With its compelling storyline, stunning visuals, and powerful performances from the entire cast, it is truly one of the standout episodes of Castle's sixth season.