[s4e23] Roadkill May 2026

: This episode marks one of the early cases after Jennifer "JJ" Jareau returns from her maternity leave.

The episode follows the Behavioral Analysis Unit (BAU) as they travel to , to investigate a series of vehicular homicides. The "Unsub" (unknown subject) uses a modified, heavy-duty truck as a weapon to run victims off the road or crush them. Key Plot Elements [S4E23] Roadkill

: The killer uses a specific stretch of highway known to locals as "Suicide 7" because of its dangerous, winding nature. : This episode marks one of the early

: Revealed to be Mason Weaver , a man suffering from severe emotional trauma and a physical disability (paralysis from the waist down) caused by a car accident. Key Plot Elements : The killer uses a

: David Rossi takes a lead role in empathizing with the suspect's physical limitations to help narrow down the profile. Notable Guest Stars Craig Sheffer : Portrays the Unsub, Mason Weaver. If you are looking for more specific details, The ending/climax of the episode.

: Weaver targets people he believes are irresponsible drivers, acting out a vigilante fantasy to "punish" those who make the roads unsafe, mirroring the accident that ruined his own life.