The Best Episodes Written By Keto Shimizu

The student becomes the master when an escaped serial killer from the Pit decides to adopt another inmate's style of killing as a way of paying homage to them.

Clayton Jessup, a deranged serial killer who targets happy families, is on the loose and looking to kill again. The team must race against time to stop him before it's too late. Bex learns who she can and can't trust.

When Oliver and his team destroy Slade's centrifuge, he attacks them as Deathstroke to get what he needs to find a replacement. Meanwhile, Laurel ponders what to do with Slade's information, and Oliver tries to convince Thea to help him protect their finances from Isabel.

Ra's al Ghul sends Nyssa and her lieutenant to Starling City to inform Oliver that the League will kill 50 people a day until Sara's murderer is turned over to them. With time running out, Oliver finally identifies the killer... and realizes that he can never turn them over for execution. Meanwhile, Ray shows Felicity his new project.

Aidan remembers his wife; Sally struggles with a hunger that she hasn't felt before; Josh and Nora meet an older wolf.

Mari McCabe, an orphan young woman, is chased through the city exactly 3 days after she was bailed out of jail by her foster father. She squares off with The Flash and Arrow.

When Damien Darhk and Malcolm Merlyn try to capture Rip Hunter in 1967, they create an Aberration big enough to draw the attention of the Legends. However, when the team arrives they discover that Rip has no memories of his past due to “time drift” and is just a graduate film student. After trying to convince Rip of who he was, they discover that he possesses an incredibly powerful artifact known as the Spear of Destiny, which the Legion of Doom is after. Ray and Nate realize that the Aberration has also affected them personally making it difficult to help the team. Meanwhile, Rory asks Stein for help and makes him promise to keep it a secret from the team.

While Oliver deals with the pressure of Slade's threats against Oliver and his loved ones, Amanda Waller with A.R.G.U.S. recruits Diggle for a black ops mission. Diggle is happy to learn that he'll be working with his ex-wife Lyla... but not so thrilled that three convicts will be going on the mission with them.

While the Arrow tries to track down the imposter killing criminals, Amanda calls Lyla in for a Suicide Squad mission and Diggle insists on accompanying his new wife. However, the Squad soon discovers that their rescue mission isn't what they expected. Meanwhile, Ray learns that Oliver is the Arrow and sets out to bring him in for his crimes.

Martin and Ronnie are separated, only to realize that they must learn how to rejoin before Eiling hunts them down and kills them... and the Flash. Meanwhile, Joe shows Barry the 3D images from the Nora Allen crime scene, and Barry asks Martin for advice on time travel.

Mari embraces her destiny as Vixen.

When a dangerous criminal from Lance's past escapes from prison, Felicity offers herself up as bait so Arrow, Diggle and Lance can capture him...but plans go awry.

A bomber nicknamed Shrapnel has set his sights on Sebastian Blood, and Oliver dons his mask to protect his newfound ally. Meanwhile, Laurel investigates Sebastian's aunt who is locked up in a mental institution, and Thea learns about Roy's newfound superstrength.

After Sara's encounter with Mallus, the Legends are paid a visit by John Constantine, a demonologist detective. The Legends agree to accompany him to a present-day psychiatric hospital and they are surprised to discover who Constantine is trying to help. During the exorcism, Sara, Leo and Constantine go missing, leaving Ray and Zari to try to take care of Constantine's client. Meanwhile, Amaya and Nate once again come face to face with Kuasa.

A new fugitive is on the loose in 1951 Tokyo and Sara, Zari, Rory and Charlie try to capture it. As Constantine struggles to recover, Ray knows that magic might be the only thing that can save him but must look outside the team for help. Meanwhile, Ava joins Nate and his family for an unconventional Thanksgiving dinner.

While on a mission to find Ray, Constantine and Nora discover Neron's evil plan. Nate convinces the Legends to think outside the box and suggests a dangerous plan to unite magical creatures and people to save the world.

Sally becomes locked in a dream world; Aidan, Josh and Zoe fight for their life.

Sally reaches out to Aidan; Josh helps Aidan locate untainted blood.

A killer is murdering his victims and attempting to frame Ted Grant. The Arrow finally comes to his aid after Laurel protests her trainer's innocence. Meanwhile, Roy goes to Felicity for help determining if he killed someone under the influence of Mirakuru.

Team Green Arrow's ongoing battle with Damien Darhk is complicated by a shocking revelation. Thea's bloodlust returns and she loses control in front of Alex.

Oliver receives an offer from Nyssa that is hard to refuse. Meanwhile, Thea continues to battle the blood lust, Malcolm steps in to help his daughter, and Laurel has a heart to heart talk with Nyssa.

Vixen pushes her abilities to the limit to escape The Flash and Arrow.

A mysterious archer known as Komodo appears in town and begins skewering businessmen. Meanwhile, Oliver worries about Thea, which forces Roy to tell him the truth about why she left town; and Ray Palmer pursues Felicity. In a flashback, Oliver is assigned his first kill and the target is his best friend, Tommy.

When the Legends trace a timequake to President Reagan’s White House, they are shocked to discover their old enemy Damien Darhk is now a Senior Adviser to Reagan. As the team works to uncover what Darhk has up his devious sleeve, Sara struggles with the choice of getting revenge or helping with the team’s larger mission. Thinking that the JSA members could be of help, Amaya and Nate break into the JSA and are surprised at what they find. Meanwhile, Stein tries to prevent his younger self from creating an even bigger time Abberation.

Barry and Iris's wedding brings the gang together, but things go awry when villains from Earth-X attack the ceremony. All of the superheroes band together with help from their super friends like Citizen Cold, The Ray, Felicity Smoak, Iris West and Alex Danvers to take on their most formidable villains yet. Earth's mightiest heroes - Green Arrow, Supergirl, The Flash and White Canary - lead their teams into battle to save the world. The crossover starts on Supergirl S03E08 Crisis on Earth-X (I), Arrow S06E08 Crisis on Earth-X (II) and The Flash S04E08 Crisis on Earth-X (III).