In the Season Four finale, Hill discovers where his true allegiances lie. Redding’s plot to use the Colonel against Morales has an unexpected outcome. Cloutier runs into trouble from his…

Greene flies to San Diego when his mother falls and is hospitalized. His concern increases when he finds her acting “completely loony and out of control.” To make matters worse,…

When arriving party guests find a prominent doctor murdered and his wife raped, the investigation starts with his estranged son and a former patient, then moves to his mistress and…

Flashbacks to Finch’s adolescence provide insight into his creation of The Machine. Also, the team receives the number of an already dying man, and Reese leaves the POI team behind…

Multiple enemies converge on the POI team as they protect a dying man whose number has come up. They struggle to keep their enemies at bay but without Reese, who…

Mulder and Scully, reunited at last, head for an active volcano under a geological study and find a deadly life form that can survive in the searing heat of the…