The hit novels behind the major BBC TV series Vienna Blood.
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A sexual predator is at large on the streets of Imperial Vienna.
The killer is no ordinary 'lust murderer', but rather an entirely new phenomenon, his deviance revealing the darker preoccupations of the age before the First World War.
Detective Inspector Oskar Rheinhardt appeals to his friend, psychoanalyst Dr. Max Liebermann, for assistance. But to understand the killer's behaviour, Liebermann must make a journey into uncharted regions of the human mind, tracking a monster whose modus operandi combines both exquisite precision and savage cruelty.
As the investigation continues, Liebermann and Rheinhardt find themselves drawn into the worlds of art and couture, worlds in which glamorous appearances mask the most sinister of secrets. . .