|A Glimmer of Hope|
|Season 9, Episode 10|
|Someone to Watch Over Me||Sine Qua Non|
- Melissa Benoist as Kara Danvers & Red Daughter
- Chyler Leigh as Alex Danvers
- Katie McGrath as Lena Luthor
- Odette Annable as Reign & Samantha Arias
- Olivia Wilde as Susannah Russo
- Tyler Hoechlin as Clark Kent
- Claire Holt as Karen Starr
- Adelaide Kane as Ava Blackwood (credit only)
- Minka Kelly as Dawn Granger
- Jenna Dewan as Lucy Lane
- Michael Rosenbaum as Lex Luthor (Earth-30) (credit only)
- Emmy Rossum as Zaora Dru-Zod
- with Laura Benanti as Astra In-Ze
- Mehcad Brooks as James Olsen
- and David Harewood as J'onn J'onzz
- Wallis Day as Chief Magistrate Nyssa-Vex
- Scarlett Byrne as Nora Fairchild
- Teressa Liane as Mary Louise Fairchild
- and Simon Templeman as Dr. Kent Nelson
- Antagonist: None
- Ava and E30 Lex do not appear in this episode.
- This episode takes place on April 11, 2024.
- This episode is Susannah-centric episodes.
- This episode is set entirely within National City General Hospital.
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