Duet - The Flash - CBS Detroit

THE FLASH - Tuesday, March 21st at 8pm on CW50 - DARREN CRISS ("GLEE") GUEST STARS AS THE MUSIC MEISTER IN THE FLASH AND SUPERGIRL MUSICAL CROSSOVER – Barry (Grant Gustin) and team are surprised when Mon-El (guest star Chris Wood) and Hank Henshaw (guest star David Harewood) arrive on their Earth carrying a comatose Supergirl (guest star Melissa Benoist) who was whammied by the Music Meister (guest star Darren Criss). Unable to wake her up, they turn to Team Flash to save her.

Pictured (L-R): Grant Gustin as Barry Allen, Melissa Benoist as Kara, Carlos Valdes as Cisco Ramon, Darren Criss as Music Meister and John Barrowman as Malcolm Merlyn -- Photo: Jack Rowand/The CW © 2017 The CW Network, LLC. All rights reserved.

Pictured (L-R): Candice Patton as Iris West, Victor Garber as Professor Martin Stein and Jesse L. Martin as Detective Joe West -- Photo: Jack Rowand/The CW © 2017 The CW Network, LLC. All rights reserved.

Pictured (L-R): Candice Patton as Iris West, Jesse L. Martin as Detective Joe West and Victor Garber as Professor Martin Stein -- Photo: Jack Rowand/The CW © 2017 The CW Network, LLC. All rights reserved.

Pictured (L-R): Carlos Valdes as Cisco Ramon, Grant Gustin as Barry Allen, Candice Patton as Iris West, Tom Cavanagh as Harrison Wells, Chris Wood as Mike, Melissa Benoist as Kara/Supergirl, Danielle Panabaker as Caitlin Snow, and David Harewood as Hank Henshaw -- Photo: Katie Yu/The CW © 2017 The CW Network, LLC. All rights reserved.

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. Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Aaron Helbing & Todd Helbing (#317). Original airdate 3/21/2017.