The Third Day Ending Explained: Finale and Story Facts
A TMDB-backed guide to The Third Day, including cast, release facts, genres and watch-provider notes.

The Third Day (2020) — an evergreen reference for this TV series: the essentials, the cast, where to watch and what to watch next. There are things here you cannot escape.
Where to watch
TMDB's U.S. watch-provider data lists HBO Max Amazon Channel, HBO Max. Availability changes by country and date, so check your streaming app before watching.
Cast
Jude Law as Sam; Katherine Waterston as Jess; Freya Allan as Kail; John Dagleish as Larry; Mark Lewis Jones as Jason; Börje Lundberg as Professor Mimir; Paddy Considine as Mr. Martin; Emily Watson as Mrs. Martin
About The Third Day
A unique story told over two distinct halves, "Summer" follows Sam, a man drawn to a mysterious island off the British coast where he encounters a group of islanders set on preserving their traditions at any cost. "Winter" follows Helen, a strong-willed outsider who comes to the island seeking answers, but whose arrival precipitates a fractious battle to decide its fate.
More like The Third Day
- Lost
- The Wilds
- Harper's Island
- Midnight Mass
- The Terror
- Lord of the Flies
- We Were Liars
- Stephen King's Kingdom Hospital
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch The Third Day?
TMDB's U.S. watch-provider data lists HBO Max Amazon Channel, HBO Max. Availability changes by country and date, so check your streaming app before watching.
Who is in the cast of The Third Day?
Jude Law as Sam; Katherine Waterston as Jess; Freya Allan as Kail; John Dagleish as Larry; Mark Lewis Jones as Jason; Börje Lundberg as Professor Mimir; Paddy Considine as Mr. Martin; Emily Watson as Mrs. Martin
Is this The Third Day guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



