Arrow Unthinkable (Season 2, Episode 23)
TV-14
TV Episode | 45 min | Action, Adventure, Crime

Arrow

Unthinkable (Season 2, Episode 23)

TV-14

TV Episode | 45 min | Action, Adventure, Crime

Oliver must decide once and for all whether he's a killer or a hero when Slade moves forward with his plan to kill one more person in Oliver's life.

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Cast	+ Add Cast
26 cast members

Name	Known for
Stephen Amell Oliver Queen / The Arrow Oliver Queen / The Arrow See fewer	Arrow (2012)
Katie Cassidy Laurel Lance Laurel Lance See fewer	A Nightmare on Elm Street (2010)
David Ramsey John Diggle John Diggle See fewer	Arrow (2012)
Willa Holland Thea Queen Thea Queen See fewer	Legion (2010)
Emily Bett Rickards Felicity Smoak Felicity Smoak See fewer	Arrow (2012)
Colton Haynes Roy Harper Roy Harper See fewer	Rough Night (2017)
Manu Bennett Slade Wilson / Deathstroke Slade Wilson / Deathstroke See fewer	30 Days of Night (2007)
Susanna Thompson Moira Queen (archive footage) Moira Queen (archive footage) See fewer	Malignant (I) (2021)
Paul Blackthorne Quentin Lance Quentin Lance See fewer	Lagaan: Once Upon a Time in India (2001)
Caity Lotz Sara Lance / The Canary Sara Lance / The Canary See fewer	The Machine (I) (2013)
Celina Jade Shado Shado See fewer	The Man with the Iron Fists (2012)
Summer Glau Isabel Rochev Isabel Rochev See fewer	Serenity (2005)
Audrey Marie Anderson Lyla Michaels Lyla Michaels See fewer	The Unit (2006)
Cynthia Addai-Robinson Amanda Waller Amanda Waller See fewer	The Lord of the Rings: The Rings of Power (2022)
Katrina Law Nyssa al Ghul Nyssa al Ghul See fewer	Arrow (2012)
Michael Rowe Floyd 'Deadshot' Lawton Floyd 'Deadshot' Lawton See fewer	Arrow (2012)
John Barrowman Malcolm Merlyn Malcolm Merlyn See fewer	Torchwood (2006)
Viv Leacock Raven Raven See fewer	Freddy vs. Jason (2003)
Keri Adams Bethany Snow Bethany Snow See fewer	Arrow (2012)
Michael Adamthwaite Torque Torque See fewer	Walking Tall (2004)
Jennifer Cheon Garcia Uni (as Jennifer Cheon) Uni (as Jennifer Cheon) See fewer	Van Helsing (2016)
Thai-Hoa Le Man in Suit Man in Suit See fewer	X-Men: Days of Future Past (2014)
Terry Lewis Terrified Prisoner Terrified Prisoner See fewer	Timeless (2016)
Eric Mazimpaka A.R.G.U.S. Guard A.R.G.U.S. Guard See fewer	The Imperfects (2022)
David Nykl Anatoly Knyazev Anatoly Knyazev See fewer	Stargate: Atlantis (2004)
Allison Riley A.R.G.U.S Tech A.R.G.U.S Tech See fewer	The Company You Keep (2012)