On Twitter, "Arrow" star Stephen Amell and executive producer Marc Guggenheim offered a few hints about the direction of season four.

When asked to describe the first episode of the fourth season in three words during a Twitter Q&A, Amell responded:

This opens up a number of possibilities. Speedy refers to Oliver Queen's sister Thea (Willa Holland), who took up Arsenal's mantle at the conclusion of season three. Oliver left behind a crime fighting legacy in Thea, John Diggle (David Ramsey), Felicity (Emily Bett Rickards) and Laurel (Katie Cassidy); it's possible that Thea has landed herself in some hot water as her alter-ego. What's more, in the previous season, Ra's al Ghul (Matt Nable) warned that exposure to the Lazarus Pit had some pretty serious consequences, which we didn't really see beyond a spell of forgetfulness. Could Thea start to show some more nefarious side effects in season four?

Amell isn't the only one doling out teases; Guggenheim also took to Twitter with a photo of a completed script for "Arrow" season four's first episode, though he took care to block out what the title will be. Nonetheless, we can see that the episode's story is by Greg Berlanti and Beth Schwartz, Marc Guggenheim and Wendy Mericle wrote the teleplay and Thor Freudenthal will direct.

"Arrow" returns to The CW this fall.