You think you are alone. Think again.

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A Killer Instinct Novel - The Joona Linna Series

The police receive a video of a woman in her home. Hours later, they discover her mutilated body. Soon after, the killer sends another tape, taunting the police. He knows there’s nothing they can do.

Only Joona Linna and his old friend Erik Maria Bark can stop this cunning predator. But
Bark is hiding secrets of his own—secrets the killer knows.