Legend has it that anyone who owns a small silver snuff box with the letters “M” and “R” engraved on the lid will be cursed. It was once owned by the famous French revolutionary Maximilian Robespierre. But the engraving on the lid is not just the initials of a Jacobin rebel... The modest administrator of the photo studio, Veronica, is tasked with choosing a birthday gift for the boss, Mikhail Rubtsov. And after buying a small French snuff box with the boss’s initials, Veronica’s life changes dramatically, and mysterious events begin to happen around her. There can be only one explanation for this - the engraving “M” “R” means Malignus Rex, the mark of Satan. Previously, the book was published under the title “Robespierre’s Snuff Box.”