Robert Gregor Kühn

Aktenzeichen XY … ungelöst is a German television programme broadcast since October 1967 on ZDF that aims to combat and solve crimes. Until 2003 it was produced in co-operation with the Austrian public service broadcaster ORF and Schweizer Fernsehen, a division of the Swiss public broadcaster SRG SSR idée suisse. It was the basis for the BBC show Crimewatch, the Dutch show Opsporing Verzocht and its US equivalent America's Most Wanted.

Investigations, arrest, conviction: Journalist Sven Voss reconstructs sensational criminal cases and speaks with experts, police officers and prosecutors at crime-relevant locations.