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Supergirl “Trinity” Official Preview Images

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The CW has begun releasing official photos to promote the May 7 episode of Supergirl which is called “Trinity.”

You can find the new photos below; but first, a description!

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.

Find more coverage related to upcoming episodes of the show here. Supergirl airs Mondays at 8PM ET/PT on The CW.

Supergirl

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Supergirl -- "Trinity" -- Image Number: SPG317a_0089.jpg -- Pictured: Jeremy Jordan as Winn -- Photo: Katie Yu/The CW -- © 2018 The CW Network, LLC. All Rights Reserved.

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About the author

Craig Byrne

Craig Byrne has been writing about Superman TV since 1995, when the "Lois & Clark Krypton Club" launched. He founded KryptonSite.com in February 2001, becoming the first fan site for The WB/CW television series Smallville. He also wrote the Official Companion books for Smallville seasons 4-7 as well as the Smallville Visual Guide.

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  1. Belle Book

    April 25, 2018

    Given that I see Winn in one photo for “Trinity” and Alex in another, I take it even though they were afflicted by a disease that was supposed to be fatal, they were cured. Not like I expected them to die, of course. :-D

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About KryptonSite

In a time before social media, Craig Byrne created KryptonSite as the ultimate fan destination for The WB/CW series Smallville which starred Tom Welling, Michael Rosenbaum, Kristin Kreuk, Erica Durance and more. In the decades since, KryptonSite has grown to cover newer Superman-related TV and movie projects while still always holding on to Smallville.

The web’s first source for Smallville news, continuing to cover Supergirl, Superman & Lois, the new Superman films and more!

Copyright © 2026 Craig Byrne & KryptonSite and the respective original authors of posts. Smallville, Kryptonite and other Superman-related items are the property of DC Comics. No infringement is intended.

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