Morts, fantômes et revenants brings together the concerns announced by its title to consider how accounts of the dead returning or appearing to the living have been understood within belief systems and folklore. Rather than treating these figures solely as horror motifs, the work looks at the cultural and imaginative meanings of apparitions and spectral encounters, along with the persistence of the dead in memory. Its French-language framing suggests an interest in European spiritual traditions and popular ghost lore, while remaining accessible to general readers seeking a clear introduction to ideas about mortality, haunting, and the boundary between the living and the beyond.