Desmond Grey is a bone, a member of a secret organisation called the Bone Society, tasked with investigating magical deaths in both the temporal and invisible worlds.
When Desmond is assigned to a covert operation investigating the deaths of stiffs and heiresses of high ranking houses, he uncovers that the murders are merely footnotes to a much darker design.
Hidden outside the line of sight is the House of Shadows, an obscure magical household with a devastating power harbouring a plot that will rock the entire invisible world to its foundations.
People are dying; shadows are rising, and time is running out.