Anil Raman

A man, who is a paranoid schizophrenic, has a delusional episode while on a full train and takes the passengers hostage, including Elle. Gideon and Hotchner race to save Elle and the other hostages.

Human remains that contain a meteorite shard lead the team to a physics lab in DC, where the victim had been working on an extremely controversial project that garnered her many death threats. Meanwhile, Angela's father arrives to seek revenge on Hodgins.