Some major spoiler on set photos from a future crossover episode between Arrow and The Flash were released online today.
The photos show Grant Gustin (The Flash) joining forces with Stephen Amell (Green Arrow) and Robbie Amell (Firestorm) to battle Tom Cavanagh (Reverse Flash) during a night shoot for an episode of The Flash.
The filming took place on March 26, 2015 in Vancouver, Canada.
No known set-date for when this episode will air.
Source: Nigel Horsley FlameFlyNet