The CW is currently gearing up for an unprecedented four show crossover that will see heroes from Arrow, Supergirl, The Flash, and Legends of Tomorrow unite to save the planet from an alien threat known as the Dominators. A hero's work is never done however, and once the day is (presumably) saved these heroes will go back to their respective territories. For Oliver, Felicity and co that means keeping the streets of Star City safe, and for the time-travelling Legends of Tomorrow that means patrolling history to stop the spread of time abberations.

Now Arrowverse producer and screenwriter Marc Guggenheim has taken to Twitter to post the title pages for episode 12 of Arrow's fifth season - entitled 'Bratva' - and episode 11 of Legends of Tomorrow's second season - entitled 'Turncoat' - both of which are currently in production.

You can take a look at both of those script title pages, below:

Arrow's patented flashbacks have been focused on Oliver's dealings with the Bratva this season, but this episode title may hint that that the organisation will be playing a bigger part in the Green Arrow's current escapades as well. Oliver's past and present arcs have often felt disparate from one another, so linking both plots together  - if only for one episode  - would be smart and welcome storytelling. It could also yield some compelling drama. Oliver's new team of vigilantes have already had reason to doubt their leader more than once, and the potential revelation that he was once part of the Russian Mafia probably won't go down too well.

The title for Legends of Tomorrow's eleventh episode is even more intriguing, potentially teasing a traitor in our heroes' midst. That's not exactly new territory for the Legends - Dominic Purcell's Heat Wave betrayed the team back in the first season (although he has since been re-recruited) - but that doesn't neccessarily mean that it won't be interesting to see a similar narrative play out.

Indeed, Guggenheim has previously teased that Wentworth Miller's Captain Cold will have a presence in Legends' second season, and it's been confirmed that he will first re-emerge in season 2 episode 10, titled 'Legion of Doom'. Could this be the 'Turncoat' the title is referring to? In any case, we'll have to wait until next year for the answers when each of these respective episodes airs after the Winter break.

NEXT: Arrowverse Crossover (Extended Trailer)

Arrow continues on November 30 with its 100th episode, which is also part of the ‘Invasion!’ Arrowverse crossover event. Legends of Tomorrow continues Thursday, December 1 with the conclusion of the four-show crossover at 8pm on The CW.

Source: Marc Guggenheim