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|Season 4, Episode 12|
|Episode Guide Transcript|
Acknowledgement of Service
In Absentia is the twelfth episode of Arrow Season 4 and the 81st episode overall.
THEA'S RESURRECTION IS TAKEN ADVANTAGE OF- When it becomes clear that Team Arrow has "taken a break", Zytle floods the water supply with his new Vertigo. Malcolm makes Nyssa an offer. Oliver considers telling Thea of his new intentions. Laurel gets a lead on Sara from an old rival. Diggle's exposure to Vertigo has unintended effects that sets him on a mission of his own. Thea is taken.
- Stephen Amell as Oliver Queen
- Katie Cassidy as Laurel Lance/Black Canary
- David Ramsey as John Diggle
- Willa Holland as Thea Queen/Speedy
- Katrina Law as Nyssa al Ghul
- Caity Lotz as Sara Lance (flashbacks)
- Colin Donnell as Tommy Merlyn (credit only)
- and John Barrowman as Malcolm Merlyn
- Peter Stormare as Werner Zytle
- Dylan Bruce as Adam Donner
- Maiara Walsh as Penny Tate
- Jacqueline Emerson as Olivia Baxtor
- and Maria Valverde as Carlotta Rivera (flashbacks)
- Antagonist: Werner Zytle
- Tommy does not appear in this episode.