The PJ receives the notification of a murder discovered by a drone in the gardens of the Audemont's house, but when Cassandre and the prosecutor Chappaz arrive to the crime scene, there is no corpse. The Audemonts are a very important family in the area, with a long tradition in the manufacture of luxury watches. The victim is apparently Marc Versini, husband of Sandra, the eldest daughter, from whom he had recently divorced. Sandra had just learned that Marc, and not she, was going to inherit the management of the company as the successor to the family patriarch, Charles Audemont.
—mgallegog