Kara gains a new ally when the lightning-fast superhero The Flash suddenly appears from an alternate universe and helps Kara battle Siobhan, aka Silver Banshee, and Livewire in exchange for her help in finding a way to return him home.
| Creator | Greg Berlanti |
|---|---|
| Actor | Melissa Benoist, Chyler Leigh, David Harewood |
| Country | United States of America |
| Production | DC Entertainment |