Time is almost up in the war between Barry Allen/The Flash (Grant Gustin and Harrison Wells/Eobard Thawne/The Reverse-Flash (Tom Cavanagh) -- for this season, at least.

The first season finale of "The Flash" is set to air next Tuesday on The CW, and the network has released 20 new images from the episode -- showing guest stars Robbie Amell and Victor Garber (the two halves of Firestorm), plus shots of characters such as Iris (Candice Patton), Joe (Jesse L. Martin) and Cisco (Carlos Valdes) hugging or otherwise comforting Barry.

"Fast Enough," the first season finale of "The Flash," airs 8 p.m. Tuesday, May 19 on The CW. Here's the official episode description:

EPIC SEASON FINALE; VICTOR GARBER AND ROBBIE AMELL GUEST STAR - Wells (Tom Cavanagh) presents Barry (Grant Gustin) with a life-changing choice. Dr. Martin Stein (guest star Victor Garber) and Ronnie Raymond (guest star Robbie Amell) return to help the S.T.A.R. Labs team with this final fight. Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Gabrielle Stanton & Andrew Kreisberg (#123). Original airdate 5/19/2015.