An illegal immigrant comes to Clark for help, escaping from a nearby farm where he's working - a farm that houses a dark secret.
A murder signals a threat to a Mars conference of medical experts gathered to coordinate the search for a cure to the plague.
An alien visitor gives four Old West outlaws the power to disintegrate their enemies. With Esai Morales.
A routine physical puts Vinnie by mistake in a psychiatric ward, where he has a hallucinatory confrontation with Sonny Steelgrave.
A painting acquired by the Phoenix Foundation leads to neo-Nazis trying to re-create the Holocaust in the United States.