Young officer Angele is called to investigate the murder of a psychiatric patient whose heart has been torn out; the circumstances prove very tricky.

As chilling coincidences come to the surface, Angele becomes obsessed with Ana at the risk of compromising her personal life and imminent marriage.

Distressed by constant visions of Ana and by a premonition about the killer, Angele finds the woman's diary, which now needs to be deciphered.

Angele struggles to progress in the investigation when she loses the help of an important informant and the clairvoyant Rose is put into isolation.

Maxime comes out of his coma and identifies the killer; the shocked Angele decides not to inform Inspector Favard and must now face the consequences.

Angele, bound to be committed into the psychiatric hospital, convinces Favard to search the clinic one last time and makes a crucial discovery.