Supergirl 3×17 “Trinity” Season 3 Episode 17 Sneak Peek – SUPERGIRL TAKES ON ALL THREE WORLDKILLERS – Still reeling after learning about Lena’s (Katie McGrath) secret, Supergirl (Melissa Benoist) asks Guardian (Mehcad Brooks) for a favor that could alter his relationship with Lena forever. Meanwhile, with all three Worldkillers united, Supergirl and the team brace for an epic battle. Caitlin Parrish & Erica Weiss directed the episode with story by Jessica Queller and teleplay by Caitlin Parrish & Derek Simon (#317). Original airdate 5/7/2018. Subscribe to tvpromosdb on Youtube for more Supergirl season 3 promos in HD!

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Supergirl 3×17 Sneak Peek/Preview “Trinity”
Supergirl Season 3 Episode 17 Sneak Peek
Supergirl 3×17 Sneak Peek “Trinity” (HD)

» Watch Supergirl Mondays at 8:00pm/7c on The CW
» Starring: Melissa Benoist, Chyler Leigh, Mechad Brooks, David Harewood

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Comment List

  • x Sophia o 07 / 05 / 2018 Reply

    I am seriously ready for tonight’s episode 😀

  • A TR 07 / 05 / 2018 Reply

    Well that wasn't creepy.

  • Nebul 07 / 05 / 2018 Reply

    Can't wait to see my supergirl!

  • Lara Duff 07 / 05 / 2018 Reply

    I really hope they'll find a way to save Sam. She's one of my favourite characters

  • Actionfan19 07 / 05 / 2018 Reply

    Supergirl won’t like this, but the only way to end the word killers is for them to kill each other.

  • Vaishnav 07 / 05 / 2018 Reply

    Super Gorl

  • Dave102693 07 / 05 / 2018 Reply

    Fangirls of Sam don't know what accountability truly is. They are like the Lapis Luzil fans on Steven Universe.

  • I am a legendary person And every woman knows me 07 / 05 / 2018 Reply

    Just Release the damn episode already

  • Serena Cortez 2.0 07 / 05 / 2018 Reply

    this seems like the episode is going to be amazing 🤩🤩

  • coxford Gamer 07 / 05 / 2018 Reply

    lol did she say what i think she said at 0:28 never heard that said on supergirl.

  • LotfiC_ 07 / 05 / 2018 Reply

    So Purity girl knows she's Purity ? How the hell ? She doesn't have a Lena Luthor by her side…

  • Pallab Basu 07 / 05 / 2018 Reply

    Omg! Sam is still alive!! 😱😱 Save Ruby!! 😭😭 Can't wait…

  • Jessica Staine 07 / 05 / 2018 Reply

    👼 3×17 👱

  • Black Fairy 07 / 05 / 2018 Reply

    It's not their fault that other half's of them killed people

  • Joe Whitehead 07 / 05 / 2018 Reply

    Let’s hope that they’ll both eventually be free

  • Poetical Ginger 07 / 05 / 2018 Reply

    I've heard some people complaining how there was no conflict in Pestilence. I think it was because Grace didn't have as much of a strong will as Julia or Samantha.

  • Sam Nelson 08 / 05 / 2018 Reply

    Stupidest show ever a'll diykes.and lesbian , pussy eating who we trying to keep men down kno thanks.

  • ale vega 08 / 05 / 2018 Reply

    OK am going to be very disappointed if this 3 don't give super girl another beating if Reign kick her butt all by herself with them 3 should be easier this should be a good time to call for back up don't you think Kara or superman lost his super speed that he can come to your aid, although I have a feeling Reign and Purity will defeat themselves via Julia and SAM wining their inner battles

  • Makiba Uboke 08 / 05 / 2018 Reply

    I hope that there is no plot to make the fan fave beloved Lena Luthor a villain….that would be a disaster

  • Steve Pahl 08 / 05 / 2018 Reply

    Good show supergirl is the best show on the cw Monday night

  • IeatNsleep Gmz 11 / 05 / 2018 Reply

    Big fucking whoop, Lena has kryptonite. Like God damn

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