Grissom and Nick investigate the death of a book restorer, while Catherine and Sara are called to the scene of a fatal train crash.
Simone and Sipowicz track a rapist-murderer; Sipowicz shows Andy Jr. the ropes; Martinez and Russell investigate an alleged rape.
Mulder and Scully, who are investigating a monster on the streets of Los Angeles, are followed documentary-style by a "Cops" camera crew.
When the team investigates a divorce-court judge's disappearance, their suspects include a list of husbands against whom he had ruled in recent cases.