Grissom and Nick investigate the death of a book restorer; Catherine and Sara examine the wreckage of a train crash.
Mulder and Scully, who are investigating a monster on the streets of Los Angeles, are followed documentary-style by a "Cops" camera crew.
Simone and Sipowicz track a rapist-murderer; Sipowicz shows Andy Jr. the ropes; Martinez and Russell investigate an alleged rape.