what season does sarah come back in arrow
Sara Lance In season two, Sara returns to Starling City after six years' absence as "The Canary". After having saved Oliver twice, Felicity (Emily Bett Rickards) realizes that the female vigilante was actually protecting Laurel and not him. Setting a trap, he manages to capture and unmask her, and Sara reveals that she's alive to her father, SCPD Detective Quentin Lance. Some time later, Sara joins Team Arrow and revisits a brief relationship with Oliver. She aids him and his colleagues Diggle (David Ramsey) and Roy Harper (Colton Haynes) in taking down a drug-enhanced Slade Wilson, with help from the League of Assassins, which requires Sara to return to Nanda Parbat. In Arrow's third season, Sara is killed while on a rooftop by being shot three times with arrows on the chest. Some time later, it was revealed that Thea (Willa Holland) killed Sara after being drugged by her father Malcolm Merlyn (John Barrowman) as part of a plot to pit Oliver against Ra's al Ghul (Matt Nable). Meanwhile, Laurel takes up Sara's mantle to fight crime as the Black Canary. In season four, Laurel and Thea decide to resurrect her using League's mystical Lazarus Pit. The process is successful, but Sara is brought back to life without a soul, making her feral and dangerous. Oliver calls his old friend John Constantine (Matt Ryan) to assist them in restoring Sara's soul. Days later, Sara aids in rescuing Ray Palmer (Brandon Routh) from the hands of Damien Darhk (Neal McDonough), before leaving town to find herself.