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Supergirl discovered that not only is her friend, Sam, Reign but that her best friend Lena Luthor knew it. It's a troubling discovery, one that series star Melissa Benoist says will bring a lot of challenges for the Girl of Steel and her alter ego, Kara.
But before Supergirl attempts to get through to Sam.she's going to have to deal with Lena. Monday's episode, "Trinity", picks up with the aftermath of the shocking discovery and part of that aftermath will include dealing with her complicated relationship with Lena. While Supergirl has a professional sort of relationship with Lena, she's Kara's best friend. It's a situation that puts Kara in a difficult situation, as Lena is still in the dark about Kara's super heroic identity. It's a situation that puts Kara in a "moral dilemma".
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