Having lost control of her actions, Helsinki police detective Jessica chooses to withdraw from her world for a while.
A short vacation, away from work and friends, perhaps she could find a way to live with the hallucinations that haunted her from afar.

She chose a remote island to live on, but the tranquility didn't last long. Just five days later, the first body was found: an 85-year-old woman, lying by the pier.

This is where the mystery begins...
An eccentric detective, unlike any other.
The owner of an old villa, Esther, and her son, the guest house, host three members of the "Spring Birds" group, after the others left, either killed or gone. Jessica and two other residents, whose identities we discover as we read, also feature a specter hovering on the upper floor.

Secrets from the distant past come to light.
One killer is behind four crimes.
A mysterious girl named Maya, the one in the blue robe, reappears decades after her mysterious disappearance from the island.
Who are the spring birds?
What is the story of the orphanage?

How will Jessica deal with these tangled knots?
Will she be able to pick up the pieces or will she get lost in her hallucinations?
Will you hit the nail on the head... or make a fatal mistake?

It's a novel steeped in detail, skillfully written by the author, making the reader see the scene and hear the sounds around him, almost living with the characters in the heart of the island.