After mysterious green fireballs nearly cause nuclear disaster during a weapons test, Hynek and Quinn must investigate how this could have occurred, each with altering theories as to what's really going on.

Casey Manderson, Currie Graham, Heather Doerksen, Ian Tracey, John Emmet Tracy, Matt O'Leary, Max Lloyd-Jones, Michael Imperioli, Robert John Burke, Rohan Campbell, Shaun Alphonso