"Welcome to New Daxam."
Rhea begins the Daxamite invasion
"City of Lost Children" is the twentieth episode of the second season of Supergirl, and the fortieth episode overall. It aired on May 8, 2017.


When an alien attacks National City, Supergirl and the D.E.O. learn the alien is a Phorian, an otherwise peaceful race with telekinetic powers. Guardian gets a lead on the Phorian's address but instead of finding the culprit, he finds a very scared boy named Marcus. Marcus will only trust James so it is up to Guardian to stop the attacks on the city. Rhea's plan escalates.[src]



Special guest star

Guest starring





  • James makes a reference to being a vigilante like "Clark's friend", to whom Winn makes points at the side of his head like spiky ears. These are references to Batman.
  • At one point, Winn whistles the tune of "Super Friend" from the Supergirl-The Flash crossover "Duet". In the song, Winn's counterpart, Grady, was the pianist.
  • Marcus and his mother are referred to as "going all Carrie", referencing the Stephen King novel Carrie and its various adaptations, in which the titular protagonist has telepathic powers.
  • Winn equating Marcus turning his head to face James to the Mona Lisa is referencing the common belief that the eyes of said painting are always gazing at the onlooker regardless of position.


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