Castle S03E15 - The Final Nail

Episode Overview

Castle and Beckett find their partnership tested when Castle's former schoolmate becomes the main suspect in the murder of his wife. As they delve deeper into the investigation, Castle grapples with a troubling realization: either Detective Beckett is on the verge of wrongfully charging an innocent man, or his old friend is a ruthless murderer. The tension mounts as they navigate the complexities of loyalty and justice.

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