Caterina Murino and Rufus Sewell (photo credit: BBC for Masterpiece)

This Sunday, Masterpiece Mystery returns to WLIW21 with Zen, based on the Aurelio Zen mysteries by Michael Dibdin. The series follows Zen, an honest cop who brings justice to modern-day Italy, even when his bosses are on the side of the lawbreakers.

Zen stars Rufus Sewell (Aurelio Zen), Caterina Murino (Tania Moretti), and Ed Stoppard (Vincenzo Fabri). The series premieres Tuesday, July 19 at 8:50 p.m. with “Vendetta,” followed by “Cabal” (July 26) and “Ratking” (August 2).

Watch a preview:

Go behind-the-scenes of the series with the cast: