Probable Cause

When investigating a brutal ritual killing, Beckett is horrified when the evidence leads her straight to Castle and she is forced to confront the idea that Castle may be capable of murder. As the evidence against him piles up, Castle orchestrates his own prison break when he learns he has been set up by Jerry Tyson, better known as the Triple Killer (3XK). As he becomes the target of a city-wide manhunt, Castle must stay alive long enough for Beckett to catch Tyson before Tyson catches him.