While searching for a woman's missing son, Montalbano finds the body of a girl who was killed years ago and teams with her twin sister to solve the case. Luca Zingaretti, Cesare Bocci, Peppino Mazzotta, Serena Rossi, Angelo Russo, Marcello Perracchio, Francesco Cordella, Carmelinda Gentile, Vincenzo Peluso Added on Netflix 2021-05-12.