For english speaking readers : what kind of story does "Sur les pas de la main noire" or "La main noire" tell?

Normandy, august 2006 :  an unexploded World War II  shell  detonates in a courtyard, and  a black  hand enters   aristocratic born  singer Luna’s bedroom, like a hideous soft spider which oozes black inky oil. Whose hand is it ? In his seventh novel, Robert Vincent invites you to travel from the past to the present in a  detective story brimming with suspense and dark humour.  « In the wake of the black hand» :  Prose that is raw and tense yet filled with poetry and melody.

Thanks to Margaret C. for helping.