When a former client calls Alicia after being charged with murder tied to a case from 2009, Alicia reviews the old case, prompting memories of her early days as a lawyer.

Leda and Castor are both on the hunt for original clone DNA. On-the-lam, Mark and Gracie pursue new leads to find the samples that might set them free, while Art and Sarah reunite to track them down. Meanwhile, Cosima and Scott try to learn more about Castor’s biology and Alison’s new money-making venture is going gangbusters. A shocking revelation about the Castor-Leda connection leaves the sisters reeling, just before Sarah witnesses a deadly Prolethean-Castor face-off.

Phil and Jay run an errand together to pick up Lily’s hand me down princess castle for Joe, both though are in a mood because Phil is upset that Claire won’t let him buy an arcade machine, and Jay thinks Gloria is letting Joe play with too many girlie items. Mitch and Cam babysit Joe and both get the itch for another baby – that is until Joe presents to be quite the handful! Meanwhile, Gloria tries to help Haley stand up for herself at work, and Claire tries to bribe Luke’s principal to give him one of the student awards this year.

Oliver goes through a rigorous transformation. The League of Assassins sets their sights on Nyssa, who is back in Starling City training Laurel. When Nyssa realizes they are coming, she arms up to face them alone but Laurel asks Felicity and Diggle to help protect her new friend.

Frankie and Mike struggle to stay awake when watching a movie during a cozy date night at home. Meanwhile, a handsome mall employee asks Sue to her senior prom and Axl and Brick hope to find success with a barbecue sauce they’ve created.

Gonzales and Coulson must find a way to put their differences aside and work together against Hydra, even if it means teaming up with someone they don’t trust.

While in Wells’ secret room, Barry learns about his battle with the Reverse-Flash in the future, as well as key moments in his life that include marrying Iris, a promotion at the CCPD, and that he created the artificial consciousness known as Gideon in the future. Barry, Caitlin, Cisco and Joe set a trap for Wells. Cisco uses himself as prey which puts him in grave danger. Meanwhile, Eddie makes a decision regarding Iris, which leaves Joe a bit unsettled.

Chang leaves Greendale to pursue fame in Hollywood. Abed agrees to complete his unfinished film with the support of Frankie, her movie producer friend Maury and Jeff.

As Castle and Alexis travel to London, their routine flight turns deadly when the plane’s Air Marshal is found murdered. With the help of Beckett on the ground, Castle and Alexis race against time to find the killer before he carries out his fateful plan.

In Braavos, Arya sees the Many-Faced God; In King’s Landing, Queen Margaery enjoys her new husband; Tyrion and Varys walk the Long Bridge of Volantis.