Arrow Season 5 Episode 9: What We Leave Behind Sneak Preview

Just a week after facing off with the Dominators in the four-show Invasion! crossover, Oliver and company will be battling with another big bad back in Star City.

Prometheus will go after Mr. Terrific, making the new Team Arrow wonder how he knows who they are. The answer could be simple - maybe Prometheus is someone on the inside!

Based on the sneak preview above, we can definitley expect another action-packed episode, while the search for clues that point towards the real identity of Prometheus continue.

PROMETHEUS MAKES A DEADLY MOVE AGAINST OLIVER AND THE TEAM — After Prometheus attacks Curtis (Echo Kellum), Oliver (Stephen Amell) realizes Prometheus knows all of Team Arrow's secret identities and is planning to come for them one by one. Felicity (Emily Bett Rickards) and Detective Malone (guest star Tyler Ritter) discover a clue that links Prometheus to Oliver's past.

Antonio Negret directed the episode written by Wendy Mericle & Beth Schwartz.

Arrow airs on Wednesday nights at 8 p.m. ET/PT on The CW. "What We Leave Behind" will debut on December 7, 2016.