Hipnos

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.

Following the failure of his last mission, RFG spy Michael Roddick decides to disappear, taking along Elena, the daughter of a Russian spy who died under strange circumstances. They settle in Barcelona and open a restaurant, to help them to forget about the past. Nevertheless, his former colleagues reappear alleging there are still some matters yet to be settled.

Follows the professional and personal lives of the staff of the fictitious Hospital Central in Madrid.