2 seasons available (11 episodes)

UFOs: Investigating the UnknownUFOs: Investigating the Unknown

Directed by acclaimed documentary filmmaker Ricki Stern (Joan Rivers: A Piece of Work, Reversing Roe) the five-part series UFOs: Investigation into the Unknown, explores the government’s decades long investigations into UFOs.more

Directed by acclaimed documentary filmmaker Ricki Stern (Joan Riv...More

Stream thousands of shows and movies, with plans starting at $9.99/month.

Hulu free trial available for new and eligible returning Hulu subscribers only. Cancel anytime. Additional terms apply.

LIMITED TIME DEAL · DISNEY+, HULU BUNDLE BASIC
Get Disney+ and Hulu (both with ads) for $10.99/mo. $2.99/mo. for 4 mos.
Save 72% per month for 4 mos. Ends 3/30.
Get Disney+ and Hulu (both with ads) for $10.99/mo. $2.99/mo. for 4 mos.
Save 72% per month for 4 mos. Ends 3/30.
Episode 1

Eden

Tony and Emily Hughes' life changes forever when their 5 year-old son, Oliver, disappears during a family holiday in France, triggering an obsessive, years-long manhunt.

Episode 2

Pray For Me

In 2006, suspicion falls on a local resident while a benefactor comes to the aid of Tony and Emily. In the present day, Tony's attempt to re-open the investigation gathers momentum.

Episode 3

The Meeting

In 2006, secrets from Tony's past come back to haunt him and Julien is given a potential lead. In the present day, the case is officially re-opened. Emily faces demons from her past.

Episode 4

Gone Fishing

In 2006, a key witness is found murdered. Tony is troubled by his relationship with Ian. In the present day, Julien re-investigates the connection to a dead witness.

Episode 5

Molly

In 2006, Tony and Emily plead with police to investigate a suspected pedophile. Tony takes matters into his own hands. In the present day, Tony and Julien try to find a person of interest in Paris.

Episode 6

Concrete

In 2006, Tony conceals his tracks, while Emily's world collapses around her. Julien encounters danger. In the present day, Tony and Julien look for someone who may have a new lead.

Episode 7

Return to Eden

In 2009, the case takes a turn when another young boy goes missing. Tony and Emily's marriage erodes. In the present day, Tony, Julien and Emily receive breaking information.

Episode 8

Till Death

In the present day, new evidence brings Tony, Emily, Julien and Mark closer to finding out the truth behind Oliver's disappearance, after eight long years of searching.

About this Show

UFOs: Investigating the Unknown

Directed by acclaimed documentary filmmaker Ricki Stern (Joan Rivers: A Piece of Work, Reversing Roe) the five-part series UFOs: Investigation into the Unknown, explores the government’s decades long investigations into UFOs.

You May Also Like

Ancient Aliens Special PresentationTVPG • Documentaries, Aliens • TV Series (2022)
UFOs: Secret Missions ExposedTVPG • Space • TV Series (2019)
Something in the DirtR • Science Fiction • Movie (2022)
TMZ Investigates: UFOs: The Pentagon ProofSpace, Aliens • TV Series (2021)
Ancient AliensTV14 • Aliens, Science Fiction • TV Series (2010)
UFOs: Secret Alien TechnologyTVPG • Documentaries, Reality • TV Series (2019)
UFO FilesTVPG • Documentaries, Supernatural • TV Series (2004)
The Haunting Of. . .TV14 • Supernatural, Documentaries • TV Series (2016)
UFOs: The White House FilesTVPG • Political, Documentaries • TV Series (2019)
The Secret of Skinwalker RanchTVPG • Documentaries, Aliens • TV Series (2020)
UFO's: Top Secret Alien FilesTVPG • Supernatural, Mystery • TV Series (2019)
Demons & SaviorsDocumentaries, Crime • TV Series (2023)
Lost Treasures of EgyptTV14 • Documentaries, History • TV Series (2019)
The Proof Is Out ThereTVPG • Documentaries • TV Series (2024)
Aliens In AlaskaTVPG • Documentaries, Supernatural • TV Series (2020)

Select Your Plan

No hidden fees, equipment rentals, or installation appointments.
Switch plans or cancel anytime.**
Disney+, Hulu Bundle
LIMITED TIME OFFER
logo
Disney+, Hulu Bundle Basic
THEN $10.99/MO.^
logo
Disney+, Hulu Bundle Premium
SAVE 42%*
Monthly price. Save up to $22.99/mo.*
$19.98/mo.$2.99/mo. for 4 mos.^
$34.98/mo.$19.99/mo.*
Subscriptions included in each plan
Disney+ and Hulu
Disney+ and Hulu
Hulu streaming library with tons of episodes and moviesHulu streaming library with tons of episodes and movies
Hulu streaming library with tons of episodes and movies
Hulu streaming library with tons of episodes and movies
Endless entertainment with Disney+Endless entertainment with Disney+
Endless entertainment with Disney+
Endless entertainment with Disney+
Most new episodes on Hulu the day after they air†
Most new episodes on Hulu the day after they air†
Most new episodes on Hulu the day after they air†
Access to award-winning Hulu Originals
Access to award-winning Hulu Originals
Access to award-winning Hulu Originals
Watch on your favorite devices, including TV, laptop, phone, or tablet
Watch on your favorite devices, including TV, laptop, phone, or tablet
Watch on your favorite devices, including TV, laptop, phone, or tablet
No ads in Hulu streaming libraryNo ads in Hulu streaming library
No ads in Hulu streaming library
No ads on Disney+No ads on Disney+
Ads will be served in select live and linear content
Download and watch on HuluDownload and watch on Hulu
Download and watch on Hulu
Download and watch on Disney+Download and watch on Disney+
Download and watch on Disney+
*Savings compared to regular monthly price of each service. Terms apply.
**Switches from Live TV to Hulu take effect as of the next billing cycle
†For current-season shows in the streaming library only
^Savings compared to the then-current regular monthly price of Disney+, Hulu Bundle Basic. Offer applies to ad-supported Disney+, Hulu Bundle plan. Valid only for new and eligible returning Disney+, Hulu, and/or ESPN+ subscribers, who are 18 years of age or older. After 4-month promo period, Disney+, Hulu Bundle Basic auto-renews at then-current monthly retail price ($10.99/mo (plus tax, where applicable)) until canceled. Select Hulu content available via Disney+ with valid Hulu and Disney+ subscriptions; additional content only available via Hulu app. Hulu content can be streamed via Disney+ on up to 2 devices simultaneously. Additional app feature and device restrictions apply. Offer valid until 11:59 PM PT on 3/30/25. Additional terms apply
©2025 Disney and its related entities.

Available Add-ons

Add-ons available at an additional cost.
Add them up after you sign up for Hulu.
Max
Max
Max
CINEMAX®
CINEMAX®
CINEMAX®
Paramount+ with SHOWTIME
Paramount+ with SHOWTIME
Paramount+ with SHOWTIME
STARZ®
STARZ®
STARZ®
Show Add-onsSee Add-ons.