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|Season 4, Episode 7|
|Episode Guide Transcript|
Lover's Quarrel is the seventh episode of Arrow Season 4 and the 76th episode overall.
TWO BIRDS, ONE STONE- Team Arrow goes up against the government when Julian Mercer infects the Suicide Squad with a nanotech that exacerbates their negative qualities and puts the city at risk. Diggle is also affected. Andrea Beaumont reveals surprising information about Task Force X and discloses a particularly painful part of her past. Lyla searches for leads on a way to neutralize the tech, but makes a shocking discovery about Mercer's employer instead. Oliver and Thea attempt to get the amok Squad members corralled, but Carrie has other plans. Nyssa confronts Mercer, who delivers some shocking news. Finally, Laurel gives Oliver an ultimatum.
- 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 (dreams)
- Deborah Ann Woll as Andrea Beaumont
- Colin Donnell as Tommy Merlyn
- and John Barrowman as Malcolm Merlyn
Special Guest StarEdit
- David Morrissey as Julian Mercer
- Amy Gumenick as Carrie Cutter/Cupid
- Nick E. Tarabay as Digger Harkness/Captain Boomerang
- Audrey Marie Anderson as Lyla Diggle