How to watch Resident Alien Season 4 in the UK

Here’s everything you need to know about Resident Alien Season 4, including where to watch it, episode details, cast, and more.

Resident Alien Season 4 Plot

In Resident Alien Season 4, Harry finds himself imprisoned on the moon by the Greys with his powers suppressed, while a flesh-hungry Mantid impersonates him on Earth. As Asta, D’Arcy, and others grapple with ongoing mysteries in Patience, Harry must escape and confront the alien conspiracy threatening humanity. The season blends humor, sci-fi thrills, and emotional stakes as loyalties shift and truths are unearthed.

Resident Alien Season 4 Release Date and Time:

Season 4 of Resident Alien airs on August 12, 2025 at 9 PM (GMT) on Sky Max in the UK.

Resident Alien Season 4 Final Review:

The Resident Alien Season 4 finale delivers a heartfelt and satisfying conclusion to the series, blending the show’s trademark humor with genuine emotional payoff. In the episode “The End Is Here,” Harry, Asta, and the residents of Patience face a new alien threat while navigating deeply personal turning points—Asta weighs her future, Max and Sahar step up as protectors, and Liv and Mike work to rebuild trust after recent challenges. Key moments include Ethan’s renewed appreciation for humanity, reconciliations replacing vengeance, and the community uniting to protect each other. The finale closes with Harry’s bittersweet departure back to space, leaving behind the bonds he’s formed, while still leaving just enough mystery for fans to imagine what might come next.

Where to Watch Resident Alien Season 4 in the UK

As of August 12, 2025, Resident Alien Season 4 is available to watch on Sky Max in the UK. Subscribers can also stream the new season online through NOW (formerly NOW TV) as part of their entertainment membership. These options give UK viewers the flexibility to enjoy Resident Alien Season 4 live on Sky Max or on-demand via NOW’s streaming platform.

Resident Alien Season 4 Episodes:

Here are the full episodes:

• Episode 1 – Prisoners
• Episode 2 – The Lonely Man
• Episode 3 – Ties That Bind
• Episode 4 – Truth Hurts
• Episode 5 – The Human Condition
• Episode 6 – Soul Providers
• Episode 7 – Daddy Issues
• Episode 8 – Mine Town
• Episode 9 – Tunnel Vision
• Episode 10 – The End Is Here – Season Finale

Resident Alien Season 4 Cast

• Alan Tudyk as Harry Vanderspeigle
• Sara Tomko as Asta Twelvetrees
• Corey Reynolds as Sheriff Mike Thompson
• Alice Wetterlund as D’Arcy Bloom
• Elizabeth Bowen as Deputy Liv Baker
• Judah Prehn as Max Hawthorne
• Levi Fiehler as Mayor Ben Hawthorne
• Meredith Garretson as Kate Hawthorne
• Guest Stars: Stephen Root, Jewel Staite, Edi Patterson

Is Resident Alien Suitable for All Ages?

Resident Alien is rated TV-14 for sci-fi violence, suggestive themes, and mild language. It is best suited for teens and adults.

FAQs

1. Who is the main villain in Season 4?
The shapeshifting Mantid alien impersonating Harry is the primary threat, along with the ongoing menace of the Greys.

2. Will Heather the Blue Avian return in Season 4?
Yes, Edi Patterson returns as Heather, continuing her storyline with Harry.

3. How many episodes are in Season 4?
Season 4 will consist of 10 episodes.

4. Will there be a Season 5?
As of now, Resident Alien has not been officially renewed for a fifth season.

Resident Alien Season 4 Trailer

You can watch the trailer for the new season for Resident Alien series right here:

You can also read this on X:

Harry’s the type of friend that always takes it bit too far 🤣 We can't wait to see these two in a NEW SEASON of #ResidentAlien, premiering June 6 on @usanetwork and @syfy! pic.twitter.com/ofXXIQAjtt

— SYFY (@SYFY) May 5, 2025

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