Vampires in the White City - The Vampire Maurice, #3

Another life, another adventure... Maurice went to the Chicago World's Fair to disrupt it in the name of French pride. Instead, he finds himself embroiled in the mysterious disappearance of one of the fair's carnival freaks. But the primary suspect, H. H. Holmes, is strangely immune to both Maurice's glamors and his bites. Can Maurice stop a killer without his usual strengths? Vampires in the White City is book 3 in the Vampire Maurice side series, set in the world of Johnny B.
Truant's bestselling Fat Vampire (now a SyFy/Hulu TV show called Reginald the Vampire.)