Details
- Show
- Supergirl (2015)
- Season
- Season 1
- Episode
- S01xE18
- Air Date
- 28 March 2016
- Where to watch
Overview
Supergirl season 1, episode 18 — “Worlds Finest” (S01xE18) first aired on 28 March 2016.
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.