In the third episode of Arrow 's fourth season, titled the high-stakes drama shifts between Star City and Nanda Parbat as the team grapples with the fallout of the Lazarus Pit and a deadly new metahuman threat. The Resurrection of Sara Lance

: The battle serves as a turning point for Oliver and Diggle, who finally begin to rebuild their trust while facing Damien Darhk’s expanding influence. Evolution of "Bloodlust"

Back home, Oliver and Diggle are forced to set aside their fractured relationship to take on , a metahuman assassin hired by H.I.V.E..

: Horrified by the perversion of life, Nyssa destroys the Lazarus Pit, ensuring it can never be used again and setting up a permanent rivalry with Malcolm. A New Threat in Star City

: Double Down utilizes supernatural playing cards as lethal projectiles, pushing the team's tactical skills to the limit.

While Laurel deals with Sara's return, Thea must confront her own darkness. Malcolm manipulates Thea's growing aggression by setting up a fatal confrontation with League of Assassins members, claiming that giving in to the urge to kill is the only way to temporarily sate the Pit's side effects.

: Sara is indeed resurrected, but she emerges as a feral, violent shell of her former self, leading Nyssa al Ghul to take a drastic stand.