A mummified corpse has been found by workers who were knocking down a wall. Ariane Sallès and Gaspard Lesage are in charge of the investigation.
| Actor | Role |
|---|---|
 Barbara CabritaArianne Sales | Arianne Sales |
 Frédéric DiefenthalGaspard Lesage | Gaspard Lesage |
 Nicolas MariéRichard Valetti | Richard Valetti |
 Gilles CohenMaxime Cartier | Maxime Cartier |
 Antoine DuléryGuy Rohan | Guy Rohan |
 Alexis LoretMathias Rohan / William Turner | Mathias Rohan / William Turner |
 Sarah-Jane SauvegrainGaëlle Madec | Gaëlle Madec |
 Anne LoiretHélène Derain | Hélène Derain |
| CCorinne BeletLaurence Kremer | Laurence Kremer |
| SSophie LepionnierNathalie Lesage | Nathalie Lesage |
| AAure RodenbourPauline Besson | Pauline Besson |
 Pierre PhilippeTony Costa | Tony Costa |
| AAlain-Frédéric LionChef de chantier | Chef de chantier |
 Erwan SzejnokSamir Daoud | Samir Daoud |
| FFabien GiamelucaTechnical and scientific policeman (iuncredited) | Technical and scientific policeman (iuncredited) |
 Marie BunelMuriel Rohan | Muriel Rohan |