|Devil's Eyes, Part 1|
|Season 4, Episode 18 (78)|
|Shiva||Devil's Eyes, Part 2|
PART 6 OF 7: PRECIOUS GEMS- Lex Luthor (Earth-10) returns to the Midway compound, where he and Tess Luthor order D.I.S.C.O.R.D. and Alexandra Danvers to partake in a team-building exercise: a treasure hunt to locate the lost Devil's Eyes sapphires. Laurel Lance continues her sparring with Lady Shiva and Sin, Talia al Ghul takes her own training to the next level, and Ray Palmer and Carrie Cutter make their escape.
- Katie Cassidy as Laurel Lance/Black Canary
- Katrina Law as Nyssa Raatko
- Jessica de Gouw as Helena Bertinelli (video)/H.U.N.T.R.E.S.S.
- Michael Rosenbaum as Lex Luthor (Earth-30)/Lex Luthor (Earth-10)
- Willa Holland as Thea Queen/Speedy
- Katie McGrath as Tess Luthor
- Chyler Leigh as Alexandra Danvers
- with Amy Acker as Brainiac
- and Katheryn Winnick as D.I.S.C.O.R.D.
Special Guest StarEdit
- Kristin Kreuk as Evelyn Langstrom
- Deborah Ann Woll as Andrea Beaumont/The Phantasm
- Sofia Boutella as Mercy Graves
- Callum Blue as Greg Osborne/Black Arrow
- and Brandon Routh as Ray Palmer
- Lexa Doig as Talia al Ghul
- Brenda Strong as Leticia Luthor
- Amy Gumenick as Carrie Cutter/Cupid
- Elodie Yung as Lady Shiva
- and Moon Bloodgood as Sin
- Antagonists: Lex Luthor (Earth-10), Tess Luthor, Greg Osborne
- 3rd episode this season to feature all main characters.
- This episode is DISCORD-centric.
- This episode takes place on January 19, 2020.