Castle (2009)

When a serial killer starts mimicking the storylines from his bestselling books, renowned mystery author Richard "Rick" Castle finds himself drawn into the investigation. With the Mayor of New York City’s blessing, Castle joins forces with the NYPD homicide unit, blending his creative instincts with real-world crime-solving. As he collaborates with the determined detective Kate Beckett, their dynamic partnership uncovers more than just clues, leading to unexpected twists in both the case and Castle’s life.