It seems like "The Flash" Season 3 recently premiered but fans are on the 17th episode already. The upcoming addition titled 'Duet' is much-awaited by its fans. The reason being: This episode plays the first part of the conclusion that The Flash shares with yet another superhero TV show called 'Supergirl.'

There are a lot of speculations surrounding the episode 17 of "The Flash" Season 3. According to a report published by Econotimes, the upcoming episode is said to feature new characters that go by the name of Barry and Kara. These two characters play a special role as they are sent to an alternate reality by the show's famous Music Meister. This is apparently going to be followed by the two discovering that they, in fact are equipped with no superpowers at all in that particular reality and that they will have to follow a set script in order to get back to the real world and escape death.

TV Guide even published the synopsis of the "The Flash" Season 3 Episode 17. The description essentially suggests that the episode will share a crossover scene with another show, SuperGirl's conclusion. The characters are intertwined and are confused as well as surprised for being able to alternate so quickly.

Music Meister will apparently play an important role too. He is the one setting the storyline in this particular episode. He will be the one to surprise "The Flash" by placing him in a similar coma as Kara and Barry. This is probably where the characters may come face to face. Note that the "The Flash" Season 3 Episode 17 is what forms the first part of the conclusion. The second part is just as much awaited by the fans as the first ones.

It's interesting to note how the two TV shows will be coming together, thereby serving as a royal treat for its loyal fans. Stay tuned for more "The Flash" Season 3 news.