An investigation into a train wreck that claimed three lives, one of them a U.S. senator. In other events, Brennan clashes with the new boss, Dr. Camille Saroyan, who has a romantic history with Booth.
When a tractor-trailer collides with a garbage truck, the skeleton of a 17-year old boy is found in the trash. A facial imprint from a shroud that wrapped the body helps identify the victim as a suburban honor student.
The headless skeleton of a young man is found in a state forest. Brennan and Booth's investigation becomes entangled in the local legend of a woman who was decapitated as a witch in the 1780s and is said to still haunt the forest.
While Brennan is paired up with another FBI agent to solve the murder of a co-ed found inside an alligator in the Everglades, Booth is sent to therapy after shooting a clown-shaped speaker on an ice cream truck.
Homeland security asks Bones to examine some remains, thinking they're radioactive, and although the site is cleared two questions remain: why was an up and coming chef murdered, and why are the bones still glowing?