Patrick Guillard and Olivier Passan have much in common: both grew up without parents, were raised in the same orphanage, and made their own way in life. Only one of them is a police officer, while the other is the prime suspect in the case of a brutal maniac operating in Paris and killing pregnant women. Passan is certain that the killer is Guillard, but bringing the suspect to justice is no simple matter. Meanwhile, Olivier Passan discovers that terrifying, mysterious events are taking place in his own home, and it appears the killer is closing in on the people he holds most dear — his wife and children…