Penguin presents the unabridged, downloadable audiobook edition of A Fever of the Blood by Oscar De Muriel, read by Andy Secombe.

New Year's Day, 1889. In Edinburgh's lunatic asylum, a patient escapes as a nurse lies dying. Leading the manhunt are legendary local detective 'Nine-Nails' McGray and Londoner-in-exile Inspector Ian Frey. Before the murder, the suspect was heard in whispered conversation with a fellow patient - a girl who had been mute for years. What made her suddenly break her silence? And why won't she talk again? Could the rumours about black magic be more than superstition?

McGray and Frey track a devious psychopath far beyond their jurisdiction, through the worst blizzard in living memory, into the shadow of Pendle Hill - home of the Lancashire witches - where unimaginable danger awaits....

A Fever of the Blood includes an exclusive interview with the author which is available only to audiobook listeners.