The hunt to find Sara's killer will get intense on the next all-new episode of "Arrow" this Wednesday.

Earlier this season, Sara Lance's life came to a tragic end when she was shot by a mysterious arrow and fell off a building to her death. Team Arrow began to investigate her murder after they got a lead on an archer assassin, but the assassin turned out not to be the culprit and the team was forced to start from square one.

In the last episode, "Corto Maltese," Diggle and Roy joined Oliver on a mission to bring Thea back to Startling City. Oliver's little sister was hiding out in South America with her biological father Malcom Meryln, who was training her to be a fighter. Once Oliver told Thea the truth about their father's death, he managed to convince her to return home, but Malcolm was not far behind.

In the meantime, Felicity settled into her new job working under Ray Palmer at Queen Consolidated, and Laurel took up boxing lessons with Ted "Wildcat" Grant, reports ScreenCrush.com.

In the next episode, which is titled "The Magician," Ra's al Ghul's daughter Nyssa will return to Startling City to find who's responsible for Sara's death. However, she and Oliver will bump heads, teases Carter Matt.

Fans will also be introduced to legendary villain Ra's al Ghul, played by "Riddick" actor Matt Nable. However, it looks like his daughter Nyssa will be the only person to actually interact with the League of Assassins figurehead.

Oliver will also struggle over whether or not he should break his vow not to kill anyone or eliminate Malcolm Merlyn for good.

According to Hypable, the official synopsis for "The Magician" reads as follows:

"A furious Nyssa (guest star Katrina Law) confronts Oliver (Stephen Amell) about Sara. When Oliver learns Malcolm Merlyn (John Barrowman) is alive, he suspects Merlyn killed Sara. Oliver and Nyssa join forces and go after the Dark Archer, intent on bringing Sara's killer to justice. Laurel (Katie Cassidy) keeps her distance from Nyssa, as she blames her sister's death on her involvement with the League of Assassins. Meanwhile, Oliver and Roy (Colton Haynes) work on repairing their respective relationships with Thea (Willa Holland), who has returned home. Nyssa discusses Oliver with her father, Ra's al Ghul (guest star Matt Nable)."

"Arrow" Season 3 Episode 3, "The Magician," airs on Wednesday, Oct. 29, at 8 p.m. ET on The CW.

Watch a teaser video below.