Chris King 
Penny Dreadful (ongoing series) #4 [PDF ebook] 

An ill wind blows through the streets of London…Lyle’s revelations about the creatures stalking the night have made it abundantly clear — the ordeal that was Vanessa Ives’ life did not end with her death. She will not be allowed to rest in peace. As the party in the drawing room prepares to gather their strength once more, they find their sanctuary under threat and, to survive, they must scatter…Meanwhile, Kaetenay has embarked on a quest of his own, one that makes him into a shadow world that could be just as dangerous as the one his chosen son, Ethan, is walking through…