The Second Wave
S02E01 - Airdate: 1989-10-02
Runtime: 46 min
A new, more advanced generation of aliens known as the Morthren arrive on Earth. Dr Blackwood is saved from a kidnapping by a renegade soldier called John Kincaid. After executing the original alien invaders for failing to conquer humanity, the Morthren aim to destroy Blackwood's team with a clone of Colonel Ironhorse.
Episode details and rating from TVmaze.