A crossover event that began on "The Flash" concludes with Oliver teaming with the Flash to stop a boomerang-wielding killer who plants five bombs in the city that are set to explode at the same time.
Released: 2014-12-03
Runtime: 50 minutes
Genre:
Stars: Stephen Amell, Katie Cassidy, David Ramsey, Willa Holland, Emily Bett Rickards, Paul Blackthorne, Colton Haynes, John Barrowman