Warning: this review contains full spoilers for Arrow: Season 8, Episode 7! If you need a refresher on where we left off, here’s our review for Season 8, Episode 6.
“Purgatory” probably shouldn’t work as well as it does. Arrow already made its grand return to Lian Yu once before. The Season 5 finale dragged Ollie and his friends back to the island for a final battle with Adrian Chase. The result was (and still is), Arrow’s single best episode. “Purgatory” doesn’t quite reach that level, but it’s close enough. And in the process, Arrow proves Oliver Queen can still go home again.
Source: IGN.com Arrow: Season 8, Episode 7 Review