Castle's fingerprints are found at the scene, and he is caught on security footage buying jewelry found on the victim.
Reviews for this episode are generally positive, highlighting its intensity and character development: [S5E5] Probable Cause -504 Murder, He Wrote
In of Castle , titled "Probable Cause," Richard Castle is framed for the ritualistic murder of a young woman named Tessa Horton. This high-stakes episode is widely considered a "solid story" by fans and critics because it elevates the series' recurring rivalry with the Triple Killer (3XK) , Jerry Tyson. Plot Summary Castle's fingerprints are found at the scene, and
Damning emails and deleted novel scenes depicting the exact murder are discovered on his hard drive. Plot Summary Damning emails and deleted novel scenes
The episode reaches a climax on a bridge where Castle and Beckett confront Tyson. Despite being shot multiple times, Tyson falls into the river, and his body is never recovered—a classic "never found the body" trope that allows him to return in later seasons.