Supergirl 1x18
Worlds Finest
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.
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Supergirl season 1
1x1Pilot Oct 26, 2015
1x2Stronger Together Nov 02, 2015
1x3Fight or Flight Nov 09, 2015
1x4Livewire Nov 16, 2015
1x5How Does She Do It? Nov 23, 2015
1x6Red Faced Nov 30, 2015
1x7Human for a Day Dec 07, 2015
1x8Hostile Takeover Dec 14, 2015
1x9Blood Bonds Jan 04, 2016
1x10Childish Things Jan 18, 2016
1x11Strange Visitor From Another Planet Jan 25, 2016
1x12Bizarro Feb 01, 2016
1x13For The Girl Who Has Everything Feb 08, 2016
1x14Truth, Justice and the American Way Feb 22, 2016
1x15Solitude Feb 29, 2016
1x16Falling Mar 14, 2016
1x17Manhunter Mar 21, 2016
1x18Worlds Finest Mar 28, 2016
1x19Myriad Apr 11, 2016
1x20Better Angels Apr 18, 2016