Earlier this week, members of the press attended a Q&A session where they were treated to a screening of Arrow's midseason finale, titled "The Scientist," with commentary from series producers and guest star Grant Gustin, who appears as Barry Allen ahead of his appearance in a pilot episode for The Flash in 2014.

As we've just seen from tonight's episode, though, next week will start with a very different status quo, as Barry found himself--in tonight's final scene--face to face with Oliver, unmasked as the vigilante, and inside the Quiver ("Arrowcave").

There was actually a question about just that this week, and we withheld it from previous publication of the interview so as not to spoil the episode. But here's what Gustin and executive producer Andrew Kreisberg had to say: At the end of episode 8, Barry does find himself in Arrow's secret lair so what can you tease about what we'll see in episode 9 and how he'll react to that?