Season four of SCI FI Channel’s original series Stargate Atlantis drops on DVD July 8 from MGM Home Entertainment.

The DVD set of the fourth season–in which former Stargate SG-1 star Amanda Tapping joins Atlantis as a regular cast member–is timed to the release of the new feature-length DVD and Blu-ray premiere of Stargate Continuum on July 29.

The Atlantis DVD set includes 20 episodes on five discs, as well as cast and crew commentaries, deleted scenes, photo galleries, the first Atlantis blooper reel and more. The DVD will be available for the suggested retail price of $49.98.