Patrick S. had followed his ex-work colleague Sophie N. for a year and a half, observed, attacked and finally meticulously planned her death. He found out the pin number of her cell phone, watched everything Sophie did on social networks. He took thousands of screenshots of their activities. When Patrick S. began to pursue her openly and followed her twice to her vacation spot in Barcelona, ​​Sophie N. was at some point annoyed by his intrusive behavior and broke off contact, calling him "touchy". The last time they saw each other before their death was in the fall of 2018 - over a year before the final act. From then on he proceeded more and more aggressively. He created profiles on Snapchat and Instagram with revealing pictures of her.