3 Body Problem

In Oxford, physicist Vera Ye kills herself, and scientists around the world die the same way. The Oxford Five, her former students, get involved: Auggie sees a countdown, and Jin enters a game that simulates a world with three suns. In flashbacks, a young Ye Wenjie, Vera's mother, sends the message from Red Coast base that the San-Ti answer. Da Shi and Thomas Wade use Auggie's nanofibers to slice the ship Judgment Day apart in the Panama Canal. The San-Ti arrive in 400 years and stall science with sophons. Jin creates the Staircase project: Will, dying of cancer, sends his brain toward the fleet, but the probe veers off course. Saul becomes a Wallfacer.

1. CameoVarys becomes pope

   In episode 3, the game's levels bring in Conleth Hill, Game of Thrones' Varys, as Pope Gregory XIII, who orders Jin's death as a heretic. Mark Gatiss plays Isaac Newton, and Reece Shearsmith plays Alan Turing.

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2. Behind the scenesThe director of WALL-E

   Episode 3, with the human computer made of soldiers, was directed by Pixar's Andrew Stanton. The crew built only the top of the observation deck and left the rest of the virtual world to effects.

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3. ReferenceA name borrowed from Bester

   The Stars Our Destination foundation in episode 6 takes its name from Alfred Bester's novel The Stars My Destination. According to D. B. Weiss, it's only the name: the stories have nothing in common.

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