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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  • Episode Number 18
  • DVD Season & Episode Number
  • Absolute Episode Number
  • Originally Aired Monday, March 28, 2016
  • Production Code 4X7618
  • Directors Nick Gomez
  • Writers Greg Berlanti, Andrew Kreisberg, Michael Grassi
  • Guest Stars Grant Gustin, Jenna Dewan-Tatum, Chris Vance, Italia Ricci, Brit Morgan, Christopher Showerman, Sarah Robson, Harriet Sansom Harris
  • Is Movie
  • IMDB tt5238952
  • Last Updated By pimentantonio7ui8
  • Last Updated 04/07/2019 7:28am

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