Arrow Spoilers on Penultimate Season 2 episode 'Streets of Fire'

The CW's Arrow has just two episodes left until Season 2 comes to an end, and all-out war is breaking out as Oliver and his allies clash with Slade and his Mirakuru army for control of Starling City. The penultimate episode, "Streets of Fire," will kick things into high gear.

In the installment, Oliver will rally his forces as Slade and his troops attack the city. Felicity will receive an important call from S.T.A.R. Labs, and Thea will see her father, Malcolm Merlyn, face-to-face.

Executive producer Andrew Kreisberg told TVLine the episode feels like an installment from 24, as it unfolds almost in real time "over the course of a very short span of time. Oliver actually starts the episode dressed as The Arrow and ends it dressed as The Arrow - and that's kind of exciting for us, because we've never done anything like that." He also called the episode "a real roller coaster" with the return of the Dark Archer.

TVLine has posted some photos of the episode, which you can view here.

The following also comes from the "Ask Ausiello" column at TVLine:

"Huge Arrow fan over here (I mean, who isn't?) and it keeps getting better and better! What can you tell us about Sara aka Canary? - Cararina

Rest assured that, despite the way she high-tailed it out of town after breaking up with Oliver,  she will be back in time for the May 14 finale - and she won't come back alone. 'It's good - really good,' Caity Lotz told us of the season ender. 'It was a lot of fun to shoot, so I think it will be a lot of fun to watch.'"

Another returning player is Katrina Law as Nyssa Al Ghul, who shows up in the final episode as part of the ongoing battle between Oliver and Slade.

"[Sara] went to go get help, because when you're fighting an army, you need an army," executive producer Andrew Kreisberg told Green Arrow TV. "She goes and gets Nyssa, and she comes back with the League. It's the Arrow, Canary, Roy and the League of Assassins vs. Slade and his Mirakuru army for the city."

What do you think of the photos? What will happen in the series finale? Let us know in the comments below.