Charlotte E. English 
Ghostspeaker [EPUB ebook] 

Konrad Savast is the Malykant: foremost and most secret servant of the God of Death. His job? To track down the foulest of murderers and bring them to The Malykt’s Justice. No mercy. No quarter.
It’s the Festival of the Dead, and Myrrolen’s famed circus has opened in town for one marvellous week. But the festivities are interrupted when a lifeless body turns up on stage in the middle of a performance… and then disappears.
Konrad’s investigation brings him face-to-face with the enigmatic Myrrolena herself: Ringmistress and adept keeper of the circus’s secrets. To uncover the murderer, he must dig deeply behind the scenes of the famed Ghost Circus—but Myrrolena may prove to be more than a match for the Malykant…