Season 2 Episode 19 A young woman on her way home from college rides the last car of a train and discovers bizarre passengers. Written by Michael McDowell.

A young man finds out that his parents had been used in an atomic-weapons experiment shortly before he was born, and that the results have had some unexpected effects on him.

Trapped in a government nuclear facility deep underground, would be rescuers become bloody prey for genetically altered dinosaurs, stalking the innermost depths of the facility’s dark tunnels. The mutant predators wreak havoc on their human counterparts and prove once and for all that extinction is a thing of the past.