In order to track down Diaz from inside prison, Oliver realizes that will require aligning with an old enemy. Meanwhile, in Star City, Felicity’s attempts to root out Diaz are thwarted by Diggle, whose allegiance to ARGUS now requires him to keep civilians like her on the outs. Realizing that she can no longer rely on her old team or old methods, a clear-eyed Felicity resolves to find a new way to go after Diaz.
Bull joins the defense team of a seemingly unwinnable case when a doctor is put on trial for murder after his submission to a DNA database links him to a homicide. While Bull and Benny work on selecting jurors who are predisposed to trust their instincts instead of incontrovertible evidence, Danny and Mackenzie research if their client’s DNA sample may have been contaminated.
After the Legends defeated Mallus and wiped the final anachronism from time they find themselves in unfamiliar territory with the Time Bureau. All that changes when Constantine informs Sara of a new magical threat that leads the team to Woodstock. Constantine thinks he knows how to defeat the new threat but will need the help of the team and their special klepto talents to help with his spell. Meanwhile, Nate and Rory go on an adventure leaving Nate facing someone from his past.