At the Imagerie d’Épinal, the lifeless body of the museum’s artistic director is found trapped in a lithographic press, his hands severed and his tongue torn out. The killer has placed an Épinal print from a triptych—the centerpiece of the exhibition currently on display at the Imagerie museum—on top of the body. The investigation is entrusted to Captain Alice Fournier and Commander Émile Cabat. While Alice, a native of Épinal, knows the Imagerie inside and out—her father ran it—Émile, who has transferred from the customs office in Pointe-à-Pitre to be closer to his daughter, will have to get used to local customs and traditions. Between the two of them, the chemistry is electric. But they’ll have to set aside their differences if they want to solve this case.