|Season 3, Episode 4 (42)|
|Don't Fear The Reaper, Part 3||Original Sins|
PART 1 OF 3: HELLUVA RIDE- Laurel Lance, Sara Lance, and Thea Queen discover John Constantine has been forced to transport them to Hell. Meanwhile, back on Earth, Kara Danvers and Alex Danvers work together to defeat Aurora de Martel and Mina Murray. Malcolm Merlyn provides Tommy Merlyn and Helena Bertinelli with chilling information.
- Katie Cassidy Rodgers as Laurel Lance/Black Canary
- Katrina Law as Nyssa al Ghul
- Jessica de Gouw as Helena Bertinelli/Huntress
- Caity Lotz as Sara Lance/White Canary
- Willa Holland as Thea Queen/Speedy
- Katie McGrath as Lena Luthor
- Melissa Benoist as Kara Danvers
- Odette Annable as Samantha Arias & Reign
- Amy Acker as Brainiac
- Rachel Skarsten as Talia al Ghul (Earth 3)
- with Colin Donnell as Tommy Merlyn/Prometheus
- Justin Hartley as Oliver Queen (Earth-19)
- and Luke Evans as Bruce Wayne
Special Guest StarsEdit
- Chyler Leigh as Alex Danvers
- Kristin Kreuk as Evelyn Langstrom
- Matt Ryan as John Constantine
- and John Barrowman as Malcolm Merlyn/Dark Archer
- Antagonists: Negral, Aurora de Martel, Mina Murray
- First appearances of Rita and Santana this season.
- This episode takes place on July 19, 2019.