Arrow gets a stalker when a woman he once rescued decides to start killing criminals in the hopes that the two of them can be together. Meanwhile, Thea gets a new DJ and Ray invites Felicity out to dinner. In the past, Oliver helps Tatsu when Maseo goes missing.moreless
Travis gets possession of the 2nd tech suit. Emily confesses to Alec as everyone goes after the sphere. Alec finds his "dead" father.
Chaos breaks out in Vancouver when a series of cyber attacks turn the city upside down. Kiera and Carlos race to find the perpetrator while clues suggest Alec's own technology has something to do with it.moreless
Kiera and Carlos's reunion is a bumpy one as they attempt to thwart Liber8's brazen hijacking of a prison transfer. Meanwhile, Kellog approaches Alec with an enticing partnership proposition.
Dean meets an intriguing woman at a bar while investigating attacks where the victims were branded with a strange symbol after their hands and feet were cut off.