Il grande freddo

The Huxley couple, in Canada to study glaciers, are torn to pieces inside their home, leaving their children, Peter and Adele, orphaned. Back in London for the funeral, Peter seeks the help of the Nightmare Investigator, convinced that a supernatural creature was behind his parents' murder.
Another researcher is dismembered in the same way, in a locked room inside her apartment. The only clue: a raven's feather. Dylan has no choice but to turn to glaciologist Nora and, together with her, embark on a journey to the far North, where the heart of the great cold beats.