About Supergirl Season 2, Episode 3 : Welcome to Earth

An attack is made on the President as hot-button, alien vs. human rights issues heat up in National City. Supergirl and the DEO are assigned to protect the President and bring in the responsible party. Alex teams up with Detective Maggie Sawyer to investigate the case while Kara searches for a recently escaped Mon-El, who she fears may be the alien behind the assault. Guest Stars: Katie McGrath, Lynda Carter, Ian Gomez, Nadine Crocker, Kaylee Sapieha, Stephanie Lavigne, Sharon Leal, Jaeson Lee, Jayson Li, Iris Truong, Leon Kaplov, Robert Zen Humpage, Jason Vaisvila, Gary Starkell,