A bomber nicknamed Shrapnel has set his sights on Sebastian Blood, and Oliver dons his mask to protect his newfound ally. Meanwhile, Laurel investigates Sebastian's aunt who is locked up in a mental institution, and Thea learns about Roy's newfound superstrength.
Quest roles:
Marrett Green(Merritt Davis), Keri Adams(Bethany Snow), Caity Lotz(Sara Lance / White Canary), Paul Lazenby(Inmate), Dylan Bruce(Adam Donner), Kevin Alejandro(Sebastian Blood / Brother Blood), Jesse Hutch(Officer Daily), Dylan Neal(Dr. Anthony Ivo), Sean Maher(Mark Scheffer / Shrapnel), Marty Gage(Gary), Annabel Kershaw(Middle Aged Woman), Ana Mercedes(Maya Resik), Janet Glassford(Nurse), Claire Lindsay(Businesswoman)