Episode 208 "The Grey Men"

The Office of Scientific and Investigative Research (OSIR) is called to an abandoned industrial park to investigate a UFO sighting. There they discover what looks to be a crop circle surrounded by strange burn marks. Case Manager Matt Praeger (Matt Frewer) wanders off alone behind an old power plant, lost in his own personal thoughts about the approaching visit of his estranged daughter. Suddenly he hears a buzzing noise. Chief Science Analyst Peter Axon (Barclay Hope) and Security Co-ordinator Ray Donahue (Peter MacNeill) race to find him, but Praeger has disappeared without a trace.

Far away, in another city, OSIR Director of Operations Frank Elsinger (Nigel Bennett) confronts Michael Kelly (Michael Moriarty) about his interference in OSIR cases and warns him to stay away from the team. There is more than an implied threat contained in Elsinger's warning to Kelly. Meanwhile, back at the power plant, Senior Analyst Lindsay Donner (Nancy Anne Sakovich) and Chief of Medicine Dr. Anton Hendricks (Colin Fox) have joined Axon and Donahue to step up the search for Praeger. Axon thinks he can trace Praeger through his comlink, but when they follow the signal into a factory building, all the team finds is a pattern of strange ovals.

Donner goes on to interview the two "experiencers" of the UFO sighting, but gets little cooperation from close-mouthed trucker (David Ferry) and cook (Paul Boretski) at the local diner. Meanwhile, Axon searches desperately for Praeger. The team discovers Praeger back on the ground, curled into a fetal ball and deep in a coma. And yet, unknown to the team, another Praeger is being interrogated in an alternate reality by "the Grey Man", an alien who has assumed the form of Michael Kelly.

Back in the mobile lab, the team becomes increasingly worried about Praeger's condition when both "experiencers" self destruct: the cook puts a knife through his heart, and the trucker drops dead after losing his will to live. In the alternate dimension, "the Grey Man" takes the real Praeger back to one of his plane crash investigations where he encounters the bodies of the cook and the trucker strewn in the wreckage: This experiment seems to be meant to test Praeger. But if he fails will he be lost in limbo forever?

Tests on the earth-bound Praeger determine he is a cloned, mirror image of his real self, and the aluminum discs are communication devices between dimensions. With extreme mental concentration, Praeger is able to switch his two "halves" and return to Earth. In the end, Elsinger refuses to accept the case as legitimate alien contact.