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Now that Star Trek: Discovery has finally entered the Mirror Universe, members of our fearless crew will be forced to deal with the ghosts of their past, and in Ash Tyler's case (Shazad Latif), this may be enough to push him past the point of no return.

A face-to-face encounter with someone from Tyler's past will reopen old wounds he is not equipped to deal with just yet. This unexpected meeting, though important, will jeopardize not only his life and that of Burnham's (Sonequa Martin-Green), but the Discovery's mission as a whole.

Further complicating things is a game-changing appearance by someone who will throw Burnham way off her game. Brace yourself, this week's episode is a doozy.

Star Trek: Discovery Bosses Say We're Pretty Close To Tyler's Identity Reveal

New episodes of Star Trek: Discovery stream Sundays at 8:30/7:30c exclusively on CBS All Access.

(Full disclosure: TV Guide is owned by CBS.)

Sonequa Martin-Green, Star Trek: DiscoverySonequa Martin-Green, Star Trek: Discovery