Warning: Full spoilers for the episode below.
“Solitude” is a hit-and-miss episode, but when it hits, it hits big. More than any episode before it, “Solitude” provides the most exciting Superman-related easter eggs, including the return of Smallville’s Supergirl Laura Vandervoort to a Super-show, as well as great character moments for Kara, high stakes, and the seeding of big things to come. Unfortunately, the primary threat of the episode relies on Hackers-level techno-cheese that won’t do the show any favors when it comes to rewatchability in a few years’ time. Couple that with a severe lack of Cat Grant, an odd subplot, and some insufferable relationship drama, “Solitude” winds up an exciting ride for Super-fans but low on engagement in the personal lives of characters that aren’t named Kara.