The synopsis for the last episode of “Gotham” season 4 has just been released:

THERE WILL BE LIGHT ON THE ALL-NEW SEASON FINALE OF “GOTHAM” THURSDAY, MAY 17, ON FOX

Jeremiah warns a skeptical Gordon of more destruction coming Gotham’s way, and Gordon is forced to make a potentially devastating decision. Meanwhile, Barbara rallies together a team to secure her position, as alliances in the underworld shift and prove no one can be trusted. Then, Bruce is forced to come to terms with the future in the all-new “A Dark Knight: No Man’s Land” season finale episode of GOTHAM airing Thursday, May 17 (8:00-9:00 PM ET/PT) on FOX. (GTH-422) (TV-14 L, V)

Cast: Ben McKenzie as Detective James Gordon, Donal Logue as Harvey Bullock, David Mazouz as Bruce Wayne, Morena Baccarin as Leslie Thompkins, Sean Pertwee as Alfred Pennyworth, Robin Lord Taylor as The Penguin, Erin Richards as Barbara Kean, Camren Bicondova as Selina Kyle, Cory Michael Smith as Edward Nygma, Jessica Lucas as Tabitha Galavan, Chris Chalk as Lucius Fox, Drew Powell as Butch Gilzean/Solomon Grundy, Alexander Siddig as Ra’s Ah Ghul

Guest Cast: Cameron Monaghan as Jeremiah Valeska, David W. Thompson as Scarecrow, Michelle Veintimilla as Firefly, Nathan Darrow as Mr. Freeze, Shiva Kalaiselvan as Lelia, BD Wong as Hugo Strange, Larry Pine as Mayor Burke, Malik Yoba as Major Harlan

Source: TheFutonCritic.com (thanks to Katherine Black for the tip!)