If it's not one thing with Oliver Queen (Stephen Amell) this season on "Arrow," it's another -- first he was presumed dead at the hands of Ra's al Ghul (Matt Nable), now he's joined the League of Assassin's as Ra's eventual replacement, in exchange for Thea's (Willa Holland) recent revival via Lazarus Pit.

In this week's episode of "Arrow," titled "Al Sah-Him" -- Oliver's new League of Assassins name -- Thea, Felicity (Emily Bett Rickards) and Diggle (David Ramsey) attempt to pick up the pieces following Oliver's departure, as seen in this newly released clip and images from the episode.

"Al Sah-Him," the latest episode of "Arrow" season three, airs 8 p.m. Wednesday, April 29 on The CW. Here's the official description of the episode:

THE LEAGUE OF ASSASSINS SETS THEIR SITES ON NYSSA - Oliver (Stephen Amell) goes through a rigorous transformation. The League of Assassins sets their sites on Nyssa (guest star Katrina Law), who is back in Starling City training Laurel (Katie Cassidy). When Nyssa realizes they are coming, she arms up to face them alone but Laurel asks Felicity (Emily Bett Rickards) and Diggle (David Ramsey) to help protect her new friend. Thor Freudenthal directed the episode with story by Beth Schwartz and teleplay by Brian Ford Sullivan & Emilio Ortega Aldrich (#321).