Deathstroke

"Deathstroke" is the eighteenth episode of the second season of Arrow, and the forty-first episode overall. It aired on April 2, 2014.

Synopsis
Slade makes his move against Oliver and the repercussions are enormous. While Oliver scrambles to protect his family, a key player in his team starts to question Oliver's decisions. Meanwhile, Isabel makes her move to take Queen Consolidated away from Oliver.

Plot
Initially pretending to comfort Thea after her breakup, Slade uses his opportunity to kidnap her. Distracted by Thea's kidnapping, and having his team work to locate Slade, Oliver gives temporary CEO status to Isabel Rochev so that she can ensure that the company runs smoothly in his absence. Isabel uses her temporary power to convince the board of directors to make her position permanent, thus allowing her company to take full control over Queen Consolidated. When confronted, Isabel reveals that she has been working with Slade the entire time, and tells Oliver where Thea is being held. Oliver arrives, but Thea has already been freed - her kidnapping was a diversion from Slade's real plan to free a group of convicts to be used as test subjects for the next Mirakuru trials. Thea informs Oliver and Moira that Slade told her that her biological father is Malcolm Merlyn. Quentin Lance is arrested for aiding the vigilante, Roy leaves Starling City, and Slade visits Laurel and reveals that Oliver is the Arrow. In flashbacks, Sara attempts to use the trade for Oliver as a moment to kill Slade, but it backfires.

Production
Preparation ran from January 30 until February 7, 2014. Shooting ran from February 11 until February 20, 2014.

Trivia

 * A piece of graffiti appears on the building outside of the building where Oliver, Sara, and Roy encounter Slade WIlson before having him arrested. The names "Griffith" and "Kerr" appear in this graffiti. Stu Kerr and Ralph Griffith are writers for "Arrow Comics", an independent comic book company.