The Flash - Season 3, Episode 17 - Rotten Tomatoes


Critic Consensus: It's called "Duet." It's a musical. It's great.

Episode Info

A crossover episode with "Supergirl" concludes. Barry and his team are surprised when Mon-El and Hank Henshaw arrive on their Earth carrying a comatose Supergirl who was whammied by the Music Meister. Unable to wake her up, they turn to Team Flash to save her. However, the Music Meister surprises The Flash and puts him in a similar coma. Kara and Barry wake up without their powers in an alternate reality where life is like a musical and the only way to escape is by following the script.


Grant Gustin
as Barry Allen/The Flash
Candice Patton
as Iris West
Danielle Panabaker
as Caitlin Snow
Carlos Valdes
as Cisco Ramon
Jesse L. Martin
as Det. Joe West
Tom Cavanagh
as Harrison Wells
Keiynan Lonsdale
as Wally West
Chris Wood
as Mon-El
David Harewood
as Hank Henshaw
Melissa Benoist
as Supergirl
Darren Criss
as Music Meister
View All

News & Interviews for Duet

Duet Videos

Duet Photos

Critic reviews for Duet

I'm not gonna lie, I hated the idea of this episode, but I was... wit it after a mere 15 mins.

August 2, 2018 | Full Review…

Forget "Invasion." "Duet" is the real showcase for what's possible when the four corners of the Arrow-verse converge.

August 2, 2018 | Rating: 9.6/10 | Full Review…

Funnily enough I took all of the characters more seriously as they were lit in sepia tones, donned from head to toe in 50's musical garb and were singing about being "super friends".

August 1, 2018 | Rating: 9/10 | Full Review…

While 'Duet' is most certainly a musical, referencing as many of the genre's tropes as possible, there's also a real fairy tale vibe to this episode.

July 31, 2018 | Full Review…

It is so entertaining and heartwarming, it's easy to look past the nagging plot issues.

August 1, 2018 | Rating: 4/5 | Full Review…

It was a legit gem and a highlight for the Arrow-verse.

July 31, 2018 | Full Review…

Discussion Forum

Discuss The Flash on our TV talk forum!