Official description with spoilers for the Arrow Season 8 episode "Purgatory"

The CW has released an official description for the last episode of Arrow that we will see before the Crisis on Infinite Earths crossover.

The December 3 episode is called “Purgatory” and if you guessed that would mean a return to Lian Yu, you guessed correctly! Byron Mann guest stars as Yao Fei. Here’s the write-up:

BYRON MANN GUEST STARS – Oliver’s (Stephen Amell) mission takes him to Lian Yu where he tries to ignore the repercussions of the looming Crisis until he receives help from an old friend. Meanwhile, a united Team Arrow faces a recognizable villain. James Bamford directed the episode written by Rebecca Bellotto & Rebecca Rosenberg (#807). Original airdate 12/3/2019.