The team faces off against a formidable villain nicknamed The Calculator (guest star Tom Amandes). Meanwhile, Nyssa (guest star Katrina Law) makes her move and Roy Harper (guest star Colton Haynes) returns to Star City.
Episode rating
Cast of episode
74
18
5
2
- Roy Harper
- Felicity Smoak
- Oliver Queen
- Thea Queen
- Malcolm Merlyn
- Laurel Lance
- Curtis Holt
- John Diggle
- Quentin Lance
- Shado
- Nyssa al Ghul
- Tatsu Yamashiro
- Baron Reiter
- Alex Davis
- Noah Kuttler
- Talibah
- Ruvé Adams
- Taiana Venediktov
- Dr. Schwartz
- Dennis