- Title: Supergirl – Strange Visitor From Another Planet
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“Strange Visitor From Another Planet” introduces a new threat to the show when a White Martian shows up in National City to attack an anti-alien Senator (Tawny Cypress) in the hopes of drawing out J’onn J’onzz (David Harewood). The show’s new villain allows Supergirl to set-up its version of J’onn’s backstory while also possibly laying the foundation for the introduction of Miss Martian somewhere down the line. The choice to make the White Martian a strong enough threat that it takes both J’onn and Kara (Melissa Benoist) working together to stop it also works to underline teases the looming threat of far more of the nearly-unstoppable aliens just a couple of planets away.
The theme of family is strong in this episode and, while surprisingly dark, the flashbacks to Mars help further flesh-out J’onn as a character and bring him a little close to his new Earth family. The episode’s B-story introduces Blake Jenner as Cat Grant‘s (Calista Flockhart) son Adam who arrives in town to reconnect with his mother thanks to Kara’s decision to meddle in Cat’s personal life. Estranged mother and son don’t get off to the best start, but eventually they find some common ground and Kara finds a potential new love interest.