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The Scientist

When a superhumanly strong thief robs a Queen Consolidated warehouse, Central City police scientist Barry Allen comes to Starling City to investigate the case. However, despite his close working relationship with Felicity, Oliver suspects that there's more to the young scientist than meets the eye. Meanwhile, Sin asks Roy to help investigate the disappearance of a friend. In the past, Oliver, Shado, and Sara try to get Slade to the submarine so they can use the serum to save his life.
Aired: Dec 04, 2013 Genre: Crime Drama Action & AdventureCasts: Stephen Amell Katie Cassidy David Ramsey Susanna Thompson Willa Holland Emily Bett Rickards Paul Blackthorne Manu BennettCreated By: Greg Berlanti Marc Guggenheim Andrew KreisbergProducers: Michael Schultz Andrew Kreisberg Greg BerlantiRating: 4 Country: United States of America Production: Berlanti Productions, DC Entertainment, Warner Bros. Television