Frankie and Alice” helmer Geoffrey Sax is set to direct psychological thriller “Unmasked” for Nasser Entertainment.

Joseph and Jack Nasser will produce the project, which will likely begin lensing in the second quarter.

Nasser Entertainment/Nasser Group North will finance the pic with Studio City Pictures; Jim Harvey, head of Studio City Pictures, is repping “Unmasked” internationally.

Script by newcomer Peter Scott Vicaire is said to mix elements of “Fight Club” and “Eyes Wide Shut.” Story centers around a man who joins a mysterious and dangerous club in order to relive the worst day of his life.

The Nassers recently served as exec producers for “For a Good Time, Call … ,” which will preem this year at Sundance.

ICM, Industry Entertainment and Lichter, Grossman, Nichols, Adler & Feldman rep Sax.