Markus' search continues; Ebran is free. Teresa realizes that she must listen to Mathias. At the same time there is a disturbing discovery: she and the team are faced with dark and old secrets.

Viesel's body is taken away: Teresa believes the killer stole something from the victim. During the CT scan, Teresa realizes: the killer is protecting the 4 children. The killer's DNA is close.

Knauss leaves in an ambulance; the friends recognize the attacker. David describes the man to Teresa: Lucia's father is stopped. Meanwhile, at the scene, the children make a horrible discovery.

Marini helps Teresa: together they head to school. The man with the cloak sees a car almost hitting a lady; he stops and hits the car. Teresa and Marini witness the scene.

Lucia and Mathias go out at night, certain they will find the Ghost. The next day, Brughi goes to Teresa and reveals a disconcerting coincidence to her. But Teresa's amnesias are increasingly frequent.

Commissioner Battaglia arrives in Travenì to investigate the death of an engineer. Meanwhile, four children meet in their secret place, unaware that someone is spying on them.