In 1999, a group of friends is rocked by the sudden death of one of their own. Twenty-two years later, their daughters are pushed together by a mysterious foe.

Shaun has a hard time balancing his fears and concerns about potentially jeopardizing Lea’s health and wanting to be with the woman he loves. Claire looks for a way to…

Dr. Murphy treats a patient who has an illness that is not only unpredictable in nature, but also unlike anything he or the team has seen before. Dr. Claire Brown…

The team must decide whether to trust a prisoner who warns them of a dangerous plot. Zapata is caught between the FBI and the CIA. Roman and Crawford butt heads…

China White, Cupid and Liza Warner break out of Iron Heights and head to Star City for revenge. Oliver tries to bring in the newly formed girl gang but the…

Oliver gets closer to the truth about Prometheus. Meanwhile, Helix refuses to continue helping Felicity until she does a favor for them.

When Vigilante attacks Oliver while he’s acting as mayor, Diggle leads the team on a mission to stop Vigilante for good.

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….

The Green Arrow is forced to face a powerful new drug dealer when Wild Dog goes off on his own.