Tread Perilously's annual Star Trek month concludes with the consensus best episode of Star Trek: Enterprise: "In a Mirror, Darkly."

After staging a coup aboard the I.S.S. Enterprise, Commander Jonathan Archer leads the ship out of Imperial space and into a Tholian controlled zone where a rebel coalition of alien races has captured the U.S.S. Defiant. Not only is the starship from the Prime Universe, it also originates from the 2360s; 100 years in the Mirror Universe's future. Archer is convinced he can take control of the Terran Empire with this advanced ship, but he will have to face his own treacherous crew, his former commanding officer and maybe even a Gorn to have a fighting chance at the throne.

Erik and Justin's latest attempt to Tread Safely with Star Trek: Enterprise leads to an analysis of the episode's first 30 seconds. It also leads to a debate regarding Yoda's species and terrible first-contact situations. They also end up debating an obscure point in Babylon 5. Erik claims "In a Mirror, Darkly" is the nerdiest episode of Star Trek ever produced. Justin falls in love with Mirror Reed. Erik praises the realization of Mirror Phlox. Both also pay more attention to Mayweather than the show ever did. The CGI Gorn gets compliments and the Alien Nation television series gets a shout-out.