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Supergirl Season 3 Trailer From Comic-Con!

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Today at the Comic-Con International in San Diego, Warner Bros. Television presented Season 3 of Supergirl, and in that panel, we got our first trailer for the upcoming third season!

Look for a whole lot of new shots within, including a glimpse at Heroes’ Adrian Pasdar as Morgan Edge… one of several high-profile castings announced today.

Supergirl Season 3 premieres Monday, October 9 on The CW. You can watch the new trailer below!

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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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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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