Upon learning who made the boomerang, they head to talk to Lance. Lyla then shows up when Barry returns and reveals his identity to Lyla. In the foundry, Barry is showing off when he speeds off for sushi. Oliver and Roy are fighting the man, when the flash shows up to help causing the man to realize he is outnumbered and leaves. Thea is out on her cell when the Flash sped by.

The man is killing multiple men.ĭig calls Oliver and gets them to go but Caitlin thinks that they won't get there in time. Lyla tells Dig that it is handled until the alarm went off. At the same time, the man shows up atĪ.R.G.U.S. The next day, Felicity receives a visit from Cisco and Caitlin who wanted to see the foundry so she brings them there.ĭig approaches Lyla for information.

In flashback, Oliver is called by Waller to find out information about bombs, by torturing the guy. Heading back to the Foundry, Felicity tells them who the victim was. Despite being told to let it go, Arrow doesn't. were there as the boomerang man killed an A.R.G.U.S. Both Arrow and Roy shoot at the bombs inside the home, before going inside and learn that A.R.G.U.S. Oliver, Dig and Roy are at a location that is owned by the mysterious man. Tarabay as Digger Harkness/Captain Boomerang Cynthia Addai-Robinson as Amanda Waller.Paul Blackthorne as Captain Quentin Lance.Stephen Amell as Oliver Queen/The Arrow.When Harkness plants five bombs in the city that are timed to explode at the same time, both teams must come together to save the city.

Harkness manages to get away and Oliver teams up with Barry again to find him before he can get to Lyla. The Arrow joins the fight and gets help from an old friend – The Flash. is involved but she defers until Harkness attacks the building, killing several agents and targeting Lyla.

Synopsis Oliver, Roy, and Diggle track down the location of a boomerang-wielding killer named Digger Harkness but are surprised when they come face to face with an A.R.G.U.S.

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