First book of the author who knows the subject very well: the social networks. Engineer in computer science, he is using daily internet. that's how he found the story which is mixing crime and computer.
this book is a message to those who use it without being careful about the informations they are sharing.
As the author is saying himself: "the friends of your friends are not always your friends on the network F".
After a night in a nightclub, to celebrate the 25 years of Magnus agency specializing in castings organized thanks to the famous Facebook social network, a top model is jumping in the Seine from the Pont Neuf bridge. The police force arrives on the scene after receiving a phone call from a tramp who saw the body in the river.