Le macchie di Rorschach

The ten Rorschach blots constitute the most powerful projective psychological test that exists. But when the brilliant psychologist Hermann Rorschach created them, in 1921, the spots he created were fifteen... What were the real purposes of the complete series? What happened to the last five spots? Who has been using it since then? And why does anyone want to stop Mystère from helping Gino Casiraghi, a Milanese trafficker who claims to have found the missing stains?