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ZDF’s Aktenzeichen XY to Seek Tips on Multiple Unsolved Violent Cases

Police are using the show’s national reach, fresh forensic reviews and monetary rewards to try to generate new, actionable leads for cold and recent investigations.

Overview

  • The long‑running ZDF program will feature several unsolved cases on Wednesday, August 19, 2026, with investigators asking viewers to report even small or previously disregarded details to dedicated police contacts.
  • Berlin police will re‑present the 2000 disappearance of 12‑year‑old Sandra Wißmann and have offered up to €5,000 for information that leads to clarification or recovery of her whereabouts.
  • Investigators will seek witnesses for the apparent homicide at Silbersee near Langenhagen, where a 67‑year‑old man was found dead on August 24, 2025, and police want reports of who saw him the evening before the discovery.
  • The unresolved death of 59‑year‑old Roland Färber in Itzehoe/Glückstadt will be shown after a second post‑mortem found signs of violence, and prosecutors have posted a €3,000 reward for tips to the case.
  • A 2024 brutal sexual assault in Bad‑Salzuflen will be revisited after DNA linked the attacker to a 2006 Barntrup case, and officials say the combined broadcast, renewed forensics and public rewards could prompt the small witness details that break long stalled probes.