Menu Icon
Tubi logo
Browse
Arrowhead Down Icon
Browse
Close Icon
Popular
A Tribute to Diane Keaton
Creatorverse
Fear Not, Gordon Has Arrived
Featured
FOX NFL: Sunday Showcase
Leaving Soon
Most Liked
Most Popular
New Episodes
New Releases
Pass Go & Press Play
Rabbit Hole: Terror on Tubi
Recently Added
Recommended
Recommended TV
Staff Picks
The Legend Is Real
Top Searched
Trending Now
Tubi Original Thrills & Chills
Tubi Originals
Genres
Action
Adult Animation
Anime
Art-House Films
Based on True Events
Classic TV & Movies
Comedy
Crime TV
Documentaries
Docuseries
Drama
Edgy Comedy
Family Series
Family Watch Party
Film Noir
Foreign Films
Foreign TV
Have a Little Faith
Heist Films
Home & Garden
Horror
Indie Films
Italian Horror & Giallo
Killer Thrillers
LGBTQ+ Storytelling
Lifestyle
Martial Arts
Music & Concerts
Mystery
Myths & Legends
Real Talk
Reality TV
Romance
Sci-fi & Fantasy
Slashers
Spanish Language
Sports Stories
Spy Movies
Stand Up Comedy
Sword & Sorcery
Thrillers
Travel
True Crime
TV Comedies
TV Dramas
Westerns
Collections
Actors Turned Directors
All Hail Stephen King
Audio Description
Award Winners & Nominees
Based on a Book
Between the Ropes
Black Storytelling
Black Storytelling By Tubi
Bollywood Dreams
British Crime TV
Cancelled Too Soon
Cult Classics
Deadly Double Features
Epics
Family Friendly Frights
First Dates & Final Roses
For the Cinephiles
From Page to Scream
Gangster Movies
Girl Power
Good Eats
Gothic Horror
Homecoming Spirit
In Our Showgirl Era
Indie Horror
K-Drama +
Modern Classics
Movie Night
Need for Speed
Neighborhood Nightmares
New-stalgia
Nostalgia TV
Only Free on Tubi
Plot Twists & Curveballs
Rhymes & Realness
Series Spotlight
She Got Game
Teenage Horror
Vigilante's Revenge
Weekly Watchlist
Networks
A&E
Classic Doctor Who
Complex Networks
CONtv
Docurama
Dove Channel
DUST
FilmRise
FOX
FOX SOUL
FOX Sports
Full Moon Features
Hallmark
K-Content by CJ ENM
Lifetime
LOL! Network
Shout! Factory TV
So...Real
TMZ Presents
TV One
Movies
TV Shows
Live TV
Español
Tubi Kids
Help Icon
Help Centre
Terms of Use
Privacy Policy
Contact Support
Sign In
Register
Search Icon
Web UI Spinner
Add to My List
Share
Merlin
Season 4 Episode 1 - The Darkest Hour: Part 1
2011 · 46 min
Subtitles Icon
TV-PG
Fantasy
·
Adventure
·
Drama
Morgana summons the mighty Callieach to tear open the veil between the worlds.
Subtitles:
English
Starring:
Colin Morgan
John Hurt
Bradley James
Richard Wilson
Angel Coulby
Season 4
Arrowhead Down Icon
Season 1
Season 2
Season 3
Season 4
Season 5
S04:E01 - The Darkest Hour: Part 1
Morgana summons the mighty Callieach to tear open the veil between the worlds.
S04:E02
Loading
S04:E03
Loading
S04:E04
Loading
S04:E05
Loading
S04:E06
Loading
S04:E07
Loading
S04:E08
Loading
S04:E09
Loading
S04:E10
Loading
S04:E11
Loading
S04:E12
Loading
S04:E13
Loading
Chevron Circle Right Icon
Tubi logo
Slash
tv shows
Facebook
Instagram
Twitter
LinkedIn
COMPANY
About Us
Careers
Contact
SUPPORT
Contact Support
Help Centre
Supported Devices
Activate Your Device
Accessibility
PARTNERS
Advertise with Us
Partner with Us
GET THE APPS
iOS
Android
Roku
Amazon Fire
PRESS
Press Releases
Tubi in the News
LEGAL
Privacy Policy (Updated)
Terms of Use (Updated)
Your Privacy Choices
Cookies
Copyright © 2025 Tubi, Inc.
Tubi is a registered trademark of Tubi, Inc.
All rights reserved.
Device ID: fc7bca32-9b5a-4611-83c6-1d2de85cb0d0
Made with
Heart
in San Francisco