MONDAY, SEPTEMBER 26
"Worlds Finest" - (9:00-10:00 p.m. ET) (TV-14, V) (HDTV)
SUPERGIRL GAINS A NEW ALLY WHEN THE LIGHTNING-FAST SUPERHERO 'THE FLASH' HELPS HER BATTLE LIVEWIRE AND SILVER BANSHEE - Kara (Melissa Benoist) gains a new ally when the lightning-fast superhero The Flash (Grant Gustin) suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee (Italia Ricci), and Livewire (Brit Morgan) in exchange for her help in finding a way to return him home. Grant Gustin crosses over as The Flash. The episode was written by Andrew Kreisberg and Michael Grassi and directed by Nick Gomez (#118). Original CBS airdate 3/28/2016.