[s4e23] — Roadkill

: The killer uses a specific stretch of highway known to locals as "Suicide 7" because of its dangerous, winding nature.

: 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. [S4E23] Roadkill

is the 23rd episode of the fourth season of the crime procedural series Criminal Minds , which originally aired on May 6, 2009 . : The killer uses a specific stretch of

: 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. : Weaver targets people he believes are irresponsible

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

that may have inspired this "vehicular heat" storyline.