And while we knew a few details, such as the episode’s villain and who was cast for “Duet,” the actual subject matter has eluded fans.
But now we know the episode will be putting a strong focus on one character in particular: Iris.
According to co-showrunner Aaron Helbing.
The Flash most recently pit the Scarlett Speedster and his heroic team against an army of sentient gorillas, setting further “anything can happen” precedents, and we’re just a few weeks away from the musical crossover with Supergirl, which looks to be as baffling as anything the Arrow-verse has provided thus far.