: A radical extremist group releases a lethal, fast-acting biological weapon during a high-profile diplomatic event.
: The episode was noted for its high-stakes tension and for blending the "procedural" format with time-travel mechanics, a popular trope in the late 90s. "Seven Days" The Gettysburg Virus(1998)
: The "Back-Step" sphere uses alien technology salvaged from the Roswell crash. It is limited to a seven-day jump due to power constraints and fuel (element 115). : A radical extremist group releases a lethal,