ION Mystery

After a prized Kentucky racehorse is stolen and its groomer is taken hostage, the team quickly learns they may be the only ones who consider the young woman's safety a priority over the horse's; Byron returns to celebrate the holidays with Jess.

Booth, Brennan and Aubrey go undercover at a rowdy demolition derby to investigate the case of a young man who died in a horrendous hay baler accident; Dr. Gordon Wyatt returns and assists Hodgins and Cam when the Gormogon case hits a dead end.

The burning body of an aspiring writer and director crash-lands onto a passing car; Bones seeks guidance on the meaning of passion in the workplace; Booth allows Aubrey to take the reins on their current case.

Brennan testifies for Zach; Angela reveals some big news; Aubrey and Jessica come to terms about their future; when the team learns Kovac has escaped, Booth rushes to protect those he loves.

After Brennan experiences a setback, the rest of the team must continue the hunt for Kovac without her, putting everything she has ever taught them to the test.

Skeletal remains found at the bottom of a lake turn out to be those of a congressman's former aide.

When Dr. Brennan uncovers the identity of a man killed while driving a car registered to a prominent Middle Eastern man with ties to the U.S. government, she and Booth find themselves tracking a terrorist.

The decaying corpse of the Venezuelan ambassador's son is found hanging from a tree.

Brennan and Booth travel to Washington state to determine how a human arm ended up in the stomach of a black bear.