|I Don't Belong|
|Season 3, Episode 4|
|Rebirth||Follow You Down|
KARA REACHES A BREAKING POINT- When Kara Danvers stumbles upon a crime that clues point to her perpetrating, she goes into self-imposed exile to try and piece together the evening in question. Meanwhile, back in Star City, Laurel Lance delivers exciting news to Oliver Queen and Tommy Merlyn resurfaces during a meeting with the Dark Side Company.
- Katie Cassidy as Laurel Lance/Black Canary/Laurel Lance (Earth 2)
- Willa Holland as Thea Queen/Speedy
- Katrina Law as Nyssa al Ghul
- Melissa Benoist as Kara Dru-Zod/Kara Danvers/Supergirl
- Colin Donnell as Tommy Merlyn
- Caity Lotz as Sara Lance (credit only)
- Zachary Quinto as Dru-Zod
- Deborah Ann Woll as Andrea Beaumont
- Katie McGrath as Lena Luthor
- Crystal Reed as Sofia Falcone
- with Luke Evans as Bruce Wayne
- and Stephen Amell as Oliver Queen
Special Guest StarsEdit
- Michael Shanks as Orion
- D.B. Woodside as Desaad
- with Ali Larter as Granny Goodness
- and Kenneth Choi as Gordon Godfrey
- Antagonists: Desaad, Granny Goodness, Gordon Godfrey
- Sara does not appear in this episode.
- This episode takes place on March 11, 2017.