A team of journalists has been given authorization to film Rocher and his team at work on a case. When they discover the dead body of Jessica Serrano, a waitress who was hiding several thousand Euros in cash in her apartment, Chloe is surprised to run into Joseph, a autistic genius she met a few years back in a psychiatric hospital. A brilliant mathematician, Joseph is none other than the No. 1 suspect of the investigation being filmed up close and personal with our heroes.