Season 4 poster

Season 4

(2023)

Overview

Rocketing into the new millennium in the eight years since season three, Happy Valley has rapidly expanded its footprint on Mars by turning former foes into partners. Now 2003, the focus of the space program has turned to the capture and mining of extremely valuable, mineral-rich asteroids that could change the future of both Earth and Mars. But simmering tensions between the residents of the now-sprawling international base threaten to undo everything they are working towards.

Cast

Joel Kinnaman as Ed Baldwin
Joel Kinnaman

as Ed Baldwin

Toby Kebbell as Miles Dale
Toby Kebbell

as Miles Dale

Krys Marshall as Danielle Poole
Krys Marshall

as Danielle Poole

Edi Gathegi as Dev Ayesa
Edi Gathegi

as Dev Ayesa

Cynthy Wu as Kelly Baldwin
Cynthy Wu

as Kelly Baldwin

Coral Peña as Aleida Rosales
Coral Peña

as Aleida Rosales

Tyner Rushing as Samantha Massey
Tyner Rushing

as Samantha Massey

Svetlana Efremova as Irina Morozova
Svetlana Efremova

as Irina Morozova

Wrenn Schmidt as Margo Madison
Wrenn Schmidt

as Margo Madison

Daniel Stern as Eli Hobson
Daniel Stern

as Eli Hobson

Episodes

Glasnost poster

Glasnost 7.4

November 9, 2023

Eight years later, a new mission begins: Capture an asteroid. Aleida and Danielle are still haunted by events from the …

Have a Nice Sol poster

Have a Nice Sol 7.2

November 16, 2023

New Helios employees arrive on Mars as NASA undergoes major changes.

The Bear Hug poster

The Bear Hug 7.6

November 21, 2023

Miles tries to make ends meet. Margo finds herself pulled into a dangerous situation.

House Divided poster

House Divided 7.2

November 30, 2023

An accident on Mars strains relationships, while Miles embarks on a risky venture.

Goldilocks poster

Goldilocks 7.1

December 7, 2023

A discovery sends teams across Earth and Mars scrambling for answers.

Leningrad poster

Leningrad 7.5

December 14, 2023

Unlikely partnerships are formed at a high-stakes international conference.

Crossing the Line poster

Crossing the Line 7.4

December 21, 2023

A group on Mars takes drastic measures. Margo grapples with a new assignment.

Legacy poster

Legacy 7.4

December 28, 2023

Plans are made with interplanetary ramifications. Ed begins working with an unexpected partner.

Brazil poster

Brazil 7.6

January 4, 2024

Things start to go awry just as an important mission approaches a critical juncture.

Perestroika poster

Perestroika 8.3

January 11, 2024

Tensions on Earth and Mars come to a head.