If you watched last night's "Flash" season finale, then you're fully aware of the game-changing developments setting the stage for season two. If you haven't seen the episode, then you should know that you are now venturing into spoiler territory, because executive producer Andrew Kreisberg is now talking openly about what the next season holds in store for several of the show's cast members.

Last night's episode ended with Rick Cosnett's Eddie Thawne dead of a self-inflicted gunshot wound -- a move he made in order to wipe his evil descendent Eobard (played by Tom Cavanagh) from existence. Eddie's plan worked, giving "The Flash" finale two shocking deaths and two holes in their cast list -- or so it seems. In an interview with Entertainment Weekly, Kreisberg revealed that not only is this not the last we've seen of Cavanagh, he'll remain a series regular in season two despite being erased from the timestream.

"Tom Cavanagh will continue to be a regular on Flash is all I am prepared to say," said Kreisberg. The EP also mentioned that the show hopes to work with Matt Letscher again, the actor behind Eobard Thawne's true face.

Things aren't so clear for Cosnett, whose Eddie Thawne looks to be more dead dead. "This wasn't always the plan, but it was always a possibility," said Kreisberg of Eddie's surprise end. "When we named Eddie's character and gave him the last name of Thawne, there was a whole subset of the audience that believed he was the Reverse Flash, which was intentional. But then we had to live with: Why did he have that name? One of the sad, surprising things about the finale is that for all the good that Barry does, in the end it's Eddie who saves the day."

Kreisberg did give a little bit of hope for fans of Eddie Thawne in a post-show interview with The Hollywood Reporter"Arrow's" knack for finding ways to bring dead characters back in some capacity.

"The great thing with our show -- you saw it with Colin Donnell and with Caity Lotz -- is just because you are dead doesn't mean you're not coming back," said Kreisberg, referencing two of "Arrow's" most shocking deaths; Lotz's Sara Lance will return to life in the upcoming "Legends of Tomorrow" spinoff. "Especially in the world of 'The Flash,' which involves time travel and real hardcore science fiction, there's always a way for Eddie to return and we hope Rick will."

Kreisberg summed it all up with this one quote to EW: "On Flash, you've never seen the last of anybody, no matter what happens to them."