Here's some scoop on Supergirl from this week's (Posted on 3/30/17) Matt's Inside Line column.
Could Lena Luthor already know that Kara is Supergirl? —Gabriela
If she doesn’t, mild-mannered reporter Kara running around in the new promo with her famous “S” playing peek-a-boo surely risks her secret being spied by someone. When we asked Melissa Benoist if Lena might already suspect what Kara is concealing beneath her sensible sweater sets, she answered, “I don’t know — but you can never trust a Luthor. So, maybe?”
Link to the full article:‘Once Upon a Time’ Season 6 Spoilers — Snow/Charming Sleeping Curse | TVLine