Do I need to watch earlier episodes before “Episode 4”?

Watching earlier episodes in season 1 helps you follow the plot and character arcs leading into this episode.

Watch The Hitchhiker's Guide to the Galaxy Season 1 Episode 4 Online

Q: Where can I watch “The Hitchhiker's Guide to the Galaxy” Season 1 Episode 4 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

“Episode 4” — Watch "The Hitchhiker's Guide to the Galaxy" Season 1 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.

Jan 26, 1981 Season 1 Episode 4 TV-PG

7.8 ★ ★ ★ ★ ★

5 votes

The Hitchhiker's Guide to the Galaxy Season 1

← Back TV Series

Where can I watch "Episode 4" online?

You can watch it through the button below, and it is free.

▶ Watch This Episode Now

Season 1 Episode 4 — Aired on Jan 26, 1981.

Notable cast/guest names in this episode include Simon Jones, David Dixon, Peter Jones.

This page includes 2 official still(s) (when available) plus legal availability links.

Looking for “watch The Hitchhiker's Guide to the Galaxy Season 1 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Arthur learns about the Great Project - the second most powerful computer in existence, called Deep Thought, created to answer the Ultimate Question of Life, the Universe and Everything. The computer comes back online much later on to give its final answer - 42.

The scientists are understandably hacked off, even more so when Deep Thought cannot tell them what the Ultimate Question is, and a new computer, called the Earth, has to be built for that purpose.

The current owners of the Great Project, Trillian's pet mice, want to cut open Arthur's head to find the Question, but when the crew are all trapped behind a bank of exploding computers, all appears lost.