The Shadow Behind My Shoulder

The "Secret Dossier" series already has a whole army of fans. The total circulation of the series exceeds 100,000 copies! A new mystical detective that will surely sharpen all your senses, make you listen to the rustle behind the door... and hope that the IIN team will come to your aid. Thirteen years ago, Olga pledged her immortal soul to fulfill her wish of becoming a famous writer, and now the time for payment has come. She is ready for death, but her husband, the leader of a group of experienced paranormal researchers, is unwilling to give his beloved to either genies or demons. However, he has very little time: only a few days remain until Olga's destined demise, and he still needs to unravel the mysterious deaths of teenagers being killed by an invisible presence in an abandoned school…