Cirrus@Austlit

'When Detective John Morton’s closest friend is murdered, he and his partner Regina Gardner find themselves dragged into a deadly game by a sadistic killer bent on revenge.
'A close friend and reporter receives threats from the killer and becomes another victim as the body count rises…
'With every move they make, their tormentor is always one step ahead.
'Everglades Psychiatric Hospital in Sydney’s North Shore holds the key and its secrets run deeper than Morton and Gardner could ever imagine. The suspects are numerous — the twists unexpected.'

Source : publisher's blurb