As Arrow moves closer to the coming "Crisis on Infinite Earths" and the flagship show's subsequent series finale, one more familiar face reunites with Oliver Queen.

The CW has released the official plot synopsis for the final season's seventh episode, titled "Purgatory." The episode will see Oliver returning to the remote island of Lian Yu. Before the start of the series, Oliver spent approximately five years on the island, where he went from spoiled playboy to vengeful vigilante. As Oliver returns to where he first developed the skills to become the Green Arrow, he is reunited with guest star Byron Mann, reprising his Season 1 role as Yao Fei.

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ARROW

“Purgatory” — (9:00-10:00 p.m. ET) (TV-14, V) (HDTV)

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.

A former Chinese Army general, Yao Fei had been exiled to Lian Yu before Oliver's arrival by his own government after they felt him becoming too dangerous to control. Yao Fei befriended Oliver and Slade Wilson, teaching the former how to survive the island's harsh conditions.

Airing Tuesdays at 9 p.m. ET/PT on The CW, Arrow's final season stars Stephen Amell as Oliver Queen, David Ramsey as John Diggle, Rick Gonzalez as Wild Dog, Juliana Harkavy as Black Canary, Katie Cassidy as Black Siren, Katherine McNamara as Mia Smoak, Joseph David-Jones as Connor Hawke and Ben Lewis as William Clayton-Queen.

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