Arrow Executive Producer Marc Guggenheim has shared a glimpse of the storyboards for the show's upcoming episode "The Brave and the Bold," part two of a two-part crossover with The Flash.

The storyboard, which shows The Flash moving through a building that appears to have either a lot of debris on the floor or perhaps unconscious bodies, depicts the scarlet speedster as a transparent ball of light, not entirely unlike some of the effects shots we've already seen in ads for The Flash.

You can check it out above.

The crossover, which will take place just before the midseason finales for each show, will feature at least Captain Boomerang. The first part, set to take place on The Flash, is titled "The Flash vs. Arrow."

The Flash debuts Tuesday at 8 p.m. ET/PT on The CW. Arrow Season Three debuts the following day at the same time.