The future of the team is left hanging in the balance after the emotional showdown between Oliver Queen and Adrian Chase. Now, the focus shifts to uncovering the fate of each and every member of Team Arrow. Could anyone have possibly survived an island-wide explosion, or has the book closed on them, as it has on Oliver's five-year flashback story?

Sam is forced to look at some stuff.

Lt. Casey gets off on the wrong foot with Sam Mullins, a temporary Chief who is filling in for Boden at House 51 for the morning. When Casey later makes a risky move in an attempt to save a distraught man from jumping off a building, Mullins has a surprise that Casey does not expect. Mouch flies in Cruz's brother Leon as a birthday surprise, but the rest of the squad struggles to keep it a secret. Meanwhile, Brett is caught off guard when she learns new information about her hometown friend Hope.

Bruce Wayne puts the lives of Gotham Natural History Museum historian Niles Winthrop and his grandson, Alex, in danger in an attempt to uncover the meaning behind his prized knife from the auction. Meanwhile, Ra's Al Ghul proves he'll take deadly measures to achieve what he wants. Also, with Sofia Falcone in town, she is on a mission to win back Gotham from Penguin

Amelia confronts a difficult situation, while Meredith deals with the fallout from her conversation with Nathan. Maggie finds herself at an awkward family dinner, Jackson receives big news and Richard and Bailey search for the stars of tomorrow.

Annalise takes on a case for the greater good and quickly realizes the stakes are much higher than she originally thought. Laurel asks Michaela to help get information regarding Wes’ death and Connor makes a major life decision that is not supported by the group. In a flash-forward, a surprising confrontation during the night of the crime is revealed.

President Mellie Grant hosts a state dinner for President Rashad of Bashran in a first step toward peace in the Middle East, and in case Mellie’s charm alone doesn’t work, Olivia secretly puts Jake to work so that they are armed with a back-up plan. Meanwhile, the team at Quinn Perkins & Associates attends the party in hopes to gain more high-profile clientele.

Sam and Dean are left to pick up the pieces after the loss of their mother, the demise of Crowley and the heartbreaking death of Castiel. Meanwhile the birth of Jack leaves the Winchester brothers with differing opinions on how to deal with a Nephilim. After being dragged into the breach, Mary must learn to survive Lucifer and an apocalyptic world.

Amy turns to Jonah for advice on how to balance her parenting. Garrett and Dina argue over who broke up with whom. Cheyenne tries to convince Mateo that the cute construction worker might just be flirting with him for store perks.

Miles Teller (Only the Brave (2017), Thank You for Your Service (2017)); Pink (album 'Beautiful Trauma', Saturday Night Live: Kumail Nanjiani/P!nk (2017)); 12-time Jeopardy! (1984) champion Austin Rogers. Also: Billy Corgan performs

Vanessa fights to get her daughter out of the citadel; Dmitri and Antanasia hatch a plot to stop Vanessa; Mohamad risks his life to save Vanessa and Dylan.