the 50th anniversary convention in Las Vegas chose the two-parter as one of the "Ten Best Star Trek Episodes" of all time, out of more than seven hundred live-action installments produced as of that date. The editors of Newsweek's Star Trek 50th Anniversary issue wrote that the episodes "often earns Trekker adulation," and listed them first among Enterprise's "Top 10" episodes; Wired also picked "In a Mirror, Darkly" as the best of Enterprise's entire run. Empire magazine ranked the episodes as the second best installment after "Terra Prime", and rated them 46th out of the "50 Best Star Trek episodes ever." In 2009, Den of Geek ranked it the number one episode of the series, writing that the installment "manages to include some of Enterprise most inventive moments, not least the revised opening credits." Jay Garmon at TechRepublic ranked it as the fifth best episode, saying that the writers managed to include a "gleefully malicious and fatal series of unexpected double-crosses, but also work in some of the most satisfying and coherent mythology gags that Enterprise ever displayed". In a list of the top 100 episodes of the Star Trek franchise, "In a Mirror, Darkly" was placed in 40th place by Charlie Jane Anders at io9. In 2017, SyFy ranked the two-parter 5th out of the seven Star Trek Mirror Universe episodes produced as of that date. That same year, Vulture.com wrote that "The series took a long time to find its feet, only hitting its stride in its final season with episodes like the two-parter “In a Mirror, Darkly.” IGN gave the combined double episode a rating of 5 out of 5, and said it "may be a gimmick episode, but it's a gimmick that works nearly flawlessly and shouldn't be missed." Reviewing the first part for TrekNation, Michelle Erica Green said that her favorite part was the modified opening sequence, and described it as "fun and lighthearted in a twisted sort of way" but thought that the closing episodes of the series would have been better if they had concentrated on the real crew and ship. She thought that the second installment saw the series "stretching a clever idea too thin", and that a "one-hour 'Mirror' would have made more sense in terms of the pacing and for Enterprise as a whole." Jamahl Epsicokhan at his website Jammer's Reviews gave the first episode a score of three out