A delusional, paranoid mental case, prodded by his "buddy," takes five hostages on a train headed toward Dallas. One of the hostages in the train is "Elle" from the BAU of the FBI.
We hear a few quick profiles of some of the other passengers at the beginning of the show before the whack-job takes control. Since the show never followed up on this stories, what was the purpose that....to kill another three minutes of the show? Later, there were more unexplained actions by people, leaving this a bit disjointed.
Gideon and the BAU team must discover why this man of severe delusions wants to see "someone of higher authority" (someone of official government capacity, we find out) and why he "wants it removed" before he totally cracks and starts killing people. The BAU must find out what "it" means, too.
It's supposed to be a super-suspense story, but I didn't find it such. It was okay, but the first time so far in this series that I can safely say it's not an episode I wouldn't watch a second time. It wasn't one of the more intelligent episodes of the season.