The first collection, dated around 2000, follows two French police officers who uncover dark secrets and confront a gruesome murderer and sinister skinheads, exposing corruption and sparking more mysteries. The second collection, dated around 2004, involves an inspector and a young detective investigating killings mimicking the deaths of the 12 Apostles. With an attractive religion expert, they aim to halt the terror and prevent the apocalypse. Both collections blend mystery, police procedurals, and thrillers, with themes of religious and societal twists on murder mysteries. They critically explore contemporary French society, delving into themes of religion, identity, and secrecy.