A middle-aged couple - hacked to death in their own home - with a samurai sword.Normal people. Who were they? And why were they targeted?Twenty years ago a policeman was murdered in his own back garden and the killer was never caught.One woman might link these mysteries. But she is being watched. Can Detectives Nikki Liska and Sam Kovac find her before it is too late? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .