Jackaby by William Ritter
Abigail Rook, fresh off an adventure looking for the remains of dinosaurs, is not ready to return to the expected life of a proper young lady. So, she takes a detour to America and quickly finds herself in the employ of a very strange sort of detective. Mr. Jackaby turns out to in fact be quite notorious for his strange beliefs and methods. Rather than being a normal detective, who uses clues and observations to solve crimes, Jackaby relies on his ability to see the supernatural.
Strange methods, however, might be exactly what's needed to solve a bizarre murder that has just taken place in the town of New Fiddleham. A body, drained of blood has been found and the only witness is a man who has been listening to unexplained wailing all night that no one else can hear.
With the help of a ghostly assistant, a duck, and a particularly charming junior detective, will Abigail and Jackaby be able to stop the mysterious murderer before he strikes again?
This is such a fun world to jump in to. The reader will quickly get as swept up by Jackaby and his associates as Abigail does. This is the first in a series and I can't wait to go along and solve more mysteries with the mysterious Rook and Jackaby.