Mazzie and Danieley succeeded Tony winner Alice Ripley and Brian d'Arcy James, respectively, as Diana and Dan Goodman. Fahy replaced Tony Award nominee Jennifer Damiano.
The company also features Kyle Dean Massey, Adam Chanler-Berat and Louis Hobson.
Here is a look at the new family:
Marin Mazzie and Jason Danieley in Next to Normal
Next to Normal currently plays the Booth Theatre. Visit NexttoNormal.com.