Series 1 (2022)

Series 1 (2022).

The format before anyone else had copied it: cloaks, candlelight, and a Highland castle nobody outside the UK had heard of yet.

A rhythm worth tracking.

The series that started it all, and the roughest version of the format you'll find: Claudia Winkleman hosts a group of strangers at Ardross Castle in the Scottish Highlands, working out a cloak-and-Round-Table game as they go. Watch it for the origin energy — the format finding its own rules live, before any other version, UK or US, had a template to follow.

The #01 slot.

Sole entry in the Traitors (UK) Editor's Canon so far. Series 1 is the only entry so far, and it's an easy call at the top. Claudia Winkleman hosts the format's origin point: a house party at Ardross Castle in the Scottish Highlands where a handful of cloaked Traitors kill off Faithfuls overnight and the whole group votes someone out around candlelight at the Round Table. The show is visibly finding its own rhythm — the twists that later series lean on hadn't been invented yet — but the tension holds from the first episode, and the format proved sturdy enough that an American version borrowed it wholesale, castle included. Essential, and still the clearest version of the idea.

4 moments, no spoilers.

• Ep 1 · the format introduces itself

  Watch how quickly the cloak-and-Round-Table mechanic gets explained and how fast the cast buys into it. The pacing here set the template every later series, UK and US, still follows.

• Ep 4 · the first Round Table stretches

  The group banishment vote starts to show its teeth. Worth watching for how Claudia Winkleman's hosting tone lands somewhere between game-show host and dinner-party referee.

• Ep 7 · the game's midpoint tightens

  The remaining cast has to start reading each other rather than the cloaks. A good episode for watching how the format handles suspicion once first impressions run out.

• Ep 12 · the finale

  The debut run closes out at Ardross Castle. Notice how compact the season feels next to the format's later, more elaborate twists.

Its Editor's Canon entry.