Even five years after the disappearance of student Rebecca Reusch, there is still uncertainty. A police officer is "irritated" by the investigation period and makes allegations against his colleagues.

The public prosecutor's office is now talking about the search for a body. The student's brother-in-law, Florian R., is still a suspect. He is still presumed innocent. And an arbor discovery in a forest also poses further puzzles. The fifth anniversary of her disappearance has brought the case back to the minds of observers. We reported on this in a five-part series. The series is titled "Rebecca's Case" and is available on CNN.com and the CNN App for iOS and Android. For confidential support, call the Samaritans in the UK on 08457 90 90 90 90, visit a local Samaritans branch or click here for details. In the U.S., call the National Suicide Prevention Line on 1-800-273-8255 or visit http://www.samaritans.org/. The evaluation of elementary data in one of the largest missing person cases in Germany took two years. Dirk B. was surprised almost two years later that nothing had been known about the analysis of his brother-in-law's data. "Back then, I read media reports about Rebecca's two-year-old disappearance. The investigators said so casually that they couldn't read anything, that made me suspicious," said the insider in the conversation with Dirk B., who is himself active in particularly serious criminal cases. B. cannot explain why the investigators in Berlin only received the Google results in spring 2021 when they claimed to have requested them long ago. He knows of a case in which his unit was able to get ALL of the perpetrator's data from Google within hours through an emergency call. Google is much faster, "for such an offense they need a maximum of two to four weeks. That's how he knows it. In urgent cases, the emergency call would give you the data practically after hours.