Ep 3. Head Case

In Castle season 4 episode 3 titled "Head Case," Richard Castle, a bestselling crime author, and NYPD detective Kate Beckett investigate a unique case involving a prominent psychiatrist named Dr. Alexandra Forsythe. Her patients are committing murders that eerily mimic their delusions, which leads Forsythe to become a suspect as she seems to have an unusually close relationship with her patients.

As the investigation progresses, Castle and Beckett discover more about Forsythe's past, including a mysterious tragedy involving her former lover. Meanwhile, Castle is dealing with his own issues as his daughter Alexis faces a potential personal crisis, and he struggles to balance his personal and professional life.

With the pressure building, Castle and Beckett race against time to stop the next killer before it's too late. Along the way, they must navigate Forsythe's twisted mind game and unravel the truth behind the murders. As the episode reaches its climax, Castle and Beckett are left to face some hard truths about themselves and their relationship.

"Head Case" offers a thrilling and suspenseful storyline that will keep viewers on the edge of their seats. The episode also features outstanding performances from the lead actors, Nathan Fillion and Stana Katic, as well as guest star Alyssa Milano, who portrays Forsythe. The episode masterfully blends elements of mystery, suspense, and drama to create a engaging and unforgettable hour of television.