The synopsis for episode 4 of “Gotham” season 4, written by Ben McKenzie, has been released, and you can read it below:

THE DEADLY DAGGER ON AN ALL-NEW “GOTHAM” THURSDAY, OCTOBER 12, ON FOX

Bruce Wayne puts the lives of Gotham Natural History Museum historian Niles Winthrop (guest star Dakin Matthews) and his grandson, Alex (guest-star Benjamin Stockholm), in danger in an attempt to uncover the meaning behind his prized knife from the auction. Meanwhile, Ra’s Al Ghul (Alexander Siddig) proves he’ll take deadly measures to achieve what he wants. Also, with Sofia Falcone (Crystal Reed) in town, she is on a mission to win back Gotham from Penguin in the all-new “A Dark Knight: The Demon’s Head” episode of GOTHAM airing Thursday, Oct. 12 (8:00-9:01 PM ET/PT) on FOX. (GTH-404) (TV-14 L, S, 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, Robin Lord Taylor as The Penguin, Erin Richards as Barbara Kean, Camren Bicondova as Selina Kyle/the future Catwoman, Cory Michael Smith as Edward Nygma/the Riddler, Jessica Lucas as Tabitha Galavan, Chris Chalk as Lucius Fox, Drew Powell as Butch Gilzean/Solomon Grundy, Alexander Siddig as Ra’s Ah Ghul, Crystal Reed as Sofia Falcone

Guest Cast: Dakin Matthews as Niles Winthrop, Benjamin Stockham as Alex Winthrop, Nathan Darrow as Mr. Freeze, Anthony Carrigan as Zsasz, Kelcy Griffin as Detective Harper

Source: TheFutonCritic.com