Skip to content

Home Movies TV Shows Platforms

Loading…

Home Movies Shows Search Profile

A world of stories.
Find your next great watch.

Discover

Movies TV Shows Platforms Search

Your collection

Continue watching Favorites Watch history Your profile

Stay connected

Get in touch Help & support Legal & DMCA RIstream indexes publicly available links from third-party sources.

© 2026 RIstream. All rights reserved.

Made for the love of stories.

Investigation Alien | RIStream

The series collection

Investigation Alien

7.120241 seasonDocumentary

In this gripping docuseries, legendary reporter George Knapp travels the globe to uncover new evidence about UFOs and investigate their presence on Earth.

Start watching Explore series

Investigation Alien poster

Keep exploring

Your next obsession.

Similar series

TV series★ 8.0

Discover the story. Make it your next watch.

The Jinx

TV seriesView details

Similar to Investigation Alien

TV series★ 7.3

Discover the story. Make it your next watch.

Top Secret UFO Projects Declassified

TV seriesView details

Similar to Investigation Alien

TV series★ 3.5

Discover the story. Make it your next watch.

The Proof Is Out There: Bermuda Triangle Edition

TV seriesView details

Similar to Investigation Alien

Perry and Croft: Made in Britain

TV series★ 7.0

Discover the story. Make it your next watch.

Perry and Croft: Made in Britain

TV seriesView details

Similar to Investigation Alien

TV series★ 7.7

Discover the story. Make it your next watch.

Lo de Évole

TV seriesView details

Similar to Investigation Alien

TV series★ 6.2

Discover the story. Make it your next watch.

In Search of Aliens

TV seriesView details

Similar to Investigation Alien

TV series★ 8.3

Discover the story. Make it your next watch.

Gulag, the Story

TV seriesView details

Similar to Investigation Alien

TV series★ 7.1

Discover the story. Make it your next watch.

UFOs Declassified

TV seriesView details

Similar to Investigation Alien

TV series★ 7.3

Discover the story. Make it your next watch.

Cold Case Files: Dead West

TV seriesView details

Similar to Investigation Alien

TV series★ 10.0

Discover the story. Make it your next watch.

Jason Can't Cook

TV seriesView details

Similar to Investigation Alien

TV series★ 7.8

Discover the story. Make it your next watch.

Forensic Files II

TV seriesView details

Similar to Investigation Alien

TV series★ 7.4

Discover the story. Make it your next watch.

Killer Women with Piers Morgan

TV seriesView details

Similar to Investigation Alien