Here is every riddle Nygma has unleashed on ‘Gotham’ and a terrifying tease of the mayhem and madness yet to come.

Cast: Ben McKenzie as Detective James Gordon, Donal Logue as Harvey Bullock, Morena Baccarin as Leslie Thompkins, Michael Chiklis as Detective Nathaniel Barnes, Sean Pertwee as Alfred, Robin Lord Taylor as Oswald Cobblepot/The Penguin, Erin Richards as Barbara Kean, David Mazouz as Bruce Wayne, Camren Bicondova as Selina Kyle/the future Catwoman, Cory Michael Smith as Edward Nygma/the future Riddler, James Frain as Theo Galavan, Jessica Lucas as Tabitha Galavan, Chris Chalk as Lucius Fox, Nicholas D’Agosto as Harvey Dent, Drew Powell as Butch Gilzean.

Guest Cast: Paul Reubens as Elijah Van Dahl, Clare Foley as Ivy Pepper, Ian Quinlan as Pinkney, Jerry Dixon as Curator (Mr. Thatch), Paul Pilcz as Sonny Gilzean, Melinda Clarke as Grace Van Dahl, Justin Mark as Charles Van Dahl, Kaley Ronayne as Sasha Van Dahl.

‘Gotham’ Season 2 airs Mondays at 8:00 PM ET/PT on FOX.