Great audiobook "Quintus Oakes: A Detective Story - Charles Ross JACKSON" online free

There have been a series of assaults at the manor house, one sending the mistress of the house insane with fear, another escalating to murder. There are reports of a tread on the stairs and shady figures disappearing from view. The servants blame the supernatural, but Quintus Oakes gets to the bottom of the mystery. (Summary by Lynne Thompson)