|Supergirl/The Flash: Duet|
|Director:|| John Medlen|
Dermott Daniel Downs
|Writer(s):|| Katie Rose Rogers|
|Release Date:||March 20 and 21, 2017|
|Running Time:||82 mins|
Supergirl/The Flash: Duet is a two-part crossover episode from season 2 of Supergirl and season 3 of The Flash.
A new villain comes to National City, putting Supergirl on high alert. Meanwhile, Winn's girlfriend, Lyra, gets Winn in trouble with the law. Maggie attempts to help Winn but old loyalties get in the way. The Music Meister attacks Supergirl.
Barry Allen/The Flash and the 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, one that Team Flash can’t cure. 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, complete with singing and dancing, to the end.
- Melissa Benoist as Kara Zor-El/Kara Danvers/Supergirl
- Grant Gustin as Barry Allen/The Flash
- Candice Patton as Iris West
- Danielle Panabaker as Caitlin Snow
- Carlos Valdes as Cisco Ramon/Vibe
- Keiynan Lonsdale as Wally West/Kid Flash
- Tom Cavanagh as Harrison Wells and Harrison "HR" Wells
- Jesse L. Martin as Joe West and Digsy Floss
- Victor Garber as Digsy's Husband
- John Barrowman as Cutter Moran
- David Harewood as J'onn J'onzz/Martian Manhunter
- Chris Wood as Mon-El and Tommy Moran
- Darren Criss as Music Meister
- Michelle Harrison as Nora Allen
- Jeremy Jordan as Winn Schott and Grady