Episode 3.8 (Primeval)

An anomaly opens at a race car test track and a Megopteran, an insect from the future, comes through. It is carnivorous and lethal, and the team must draw on all their resources to get it back to its home. However, things get complicated when Jack (Robert Lowe) decides to find out what his sister Abby really does for a living, and inadvertently drives through an anomaly into the future: a post-apocalyptic world overrun by future predators. Now the team must mount a desperate rescue mission after Jack, and then find a way to escape with their lives. During the rescue mission, Abby realizes something about Connor and it will change both their lives forever.