Overview
- The five-part series premiered in the UK with a double bill on 7 December on BBC One and BBC iPlayer.
- Set in the Whoniverse without the Doctor, the drama follows UNIT as an ancient ocean species reveals itself and triggers a global crisis.
- Early critical reaction is divided, with notices ranging from two to four stars, while many viewers praised the show as gripping.
- Multiple viewers reported difficulty hearing dialogue in the opening episodes, citing a problematic broadcast sound mix.
- Episodes 3 and 4 air on 14 December with the finale on 21 December, and Disney holds international rights for an early 2026 Disney+ release.