'Look at me' is the 95th 'crime scene' for the team around Batic and Leitmayr since 1991. One of these women with a problematic preference for disturbed types was also the one who drove the serial killer in the film to his crimes.
She used the man's sadism to incite him to commit new acts of violence, which he then carried out in front of the camera. There are many wrong turns in the investigation, but everywhere people's hurt and their greed for attention is evident in its most pathological excesses.