In flashbacks, Oliver and Talia kill an illegal drug merchant from Robert Queen's list. Talia again presses Oliver to return home, but he chooses instead to help Anatoli kill Gregor.

During the S.T.A.R. Labs incident, CCPD undercover officer Tina Boland develops a sonic scream after watching her partner die at the hands of drug dealer Sean Sonus. In the present day,

Oliver welcomes the seemingly-revived Laurel into the team; but it becomes clear that she is Laurel’s Earth-2 doppelganger, having been broken out of S.T.A.R. Labs by Prometheus. Laurel escapes and calls Oliver for an arrangement, ending in her capture. Learning about Paul, Rene convinces Curtis...