In the series opener, a dinosaur sighting is investigated by evolutionary zoologist Nick Cutter and his team. (TV Guide)
The team searches unused tunnels in the London Underground after a giant spider attacks a cleaner. (TV Guide)
Nick worries about his wife as prehistoric reptiles invade swimming pools, cellars and reservoirs via space-time anomalies. (TV Guide)
Ancient parasites that could devastate the human race are discovered in a group of dodos. (TV Guide)
A prehistoric winged reptile appears above a golf course; Connor and Abby search for Rex in the nearby woods. (TV Guide)
Helen resurfaces with news implicating a predator from the future as the culprit behind numerous disappearances. (TV Guide)