Grant Gustin to Guest Star in Arrow 4×07 “Brotherhood”

Production has begun on Arrow’s 4×07 episode, “Brotherhood” and it looks like The Flash’s Grant Gustin will be guest starring in the episode. Stephen Amell posted a photo of himself and Grant on set in Vancouver yesterday, September 22.

The caption of the photo read, “Game changing scenes are fun.” This is around the same time last year that the two shows began filming their crossover episode. We know this year, their crossover episodes will begin setting up the Legends of Tomorrow pilot, however it has not been confirmed that 4×07 is a part of the crossover. Grant may just be guest starring in it.

Many fans believe that the two were either filming a funeral scene or something to do with Oliver’s political career. What do you guys think?

If more information regarding the episode is released we will let you know!

Source: Twitter