"Roadkill" is the twenty-third episode of Season Four and the 88th overall of Criminal Minds.
Local authorities summon the assistance of the BAU after a series of homicides occur that appear to have been caused by a serial killer's car near Bend, Oregon.
- "I'm Alive" by Johnny Thunder
- Aaron Hotchner: "I'm not sure about automobiles. With all their speed forward, they may be a step backward in civilization." - Booth Tarkington
- Jennifer Jareau: "The human voice can never reach the distance that is covered by the still, small voice of conscience." - Mahatma Gandhi