Complete story — includes the ending
Felicity and Laurel work together to track down a person Laurel believes may have followed her from Earth-2. The person is eventually revealed as the Earth-1 version of the drunk, Brett Collins, who accidentally killed Laurel's father. The Earth-2 version of Brett is revealed to have died five years earlier. Diaz attempts a mass breakout from A.R.G.U.S., killing Curtis in the process, before it is revealed he was in a controlled virtual reality simulation conceived by Curtis to extract information regarding Dante. The SCPD is held hostage by a suicide bomber using electricity who reveals himself to be Sam Hackett, the son of Dave Hackett from the Queen's Gambit whom Robert killed so Oliver could survive. Sam wants Oliver dead, forcing the officers to either kill him or die. Oliver reasons with Sam long enough for Dinah to cut the power, removing his powers and allowing Oliver to apprehend him. Emiko starts to see the good in Oliver and thinks about starting to talk. Dinah reads a note from an unknown source stating that someone will kill the vigilantes one by one.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 7. HTML formatting and reference markers removed. · Content license