Usual Suspects

M'Gann, Conner, and Artemis are called to an island by Queen Bee, Lex, and (perhaps) Sportsmaster, in apparent betrayal of the team, but it's quickly found to be a ruse. They have revealed their secrets to each other, so the blackmail is no longer effective.

Back on the watchtower, following Red Arrow's initiation into the Justice League, he places Starro mind-control tech on the League members, and Vandal Savage arrives to take control, revealing that Red Arrow was (unwittingly) the mole.