Arrow (2012)

S3E8 The Brave and the Bold (II)

In the thrilling conclusion of a crossover event that started on "The Flash," Oliver joins forces with the Flash to track down a deadly assassin armed with a boomerang. This elusive villain has strategically placed five bombs throughout the city, all programmed to detonate simultaneously. Together, the two heroes race against the clock to defuse the devices and save the city from impending disaster.