Season
- Season 0 1997-10-18
- Season 1 1967-10-20
- Season 2 1968-01-09
- Season 3 1969-01-24
- Season 4 1970-01-23
- Season 5 1971-01-22
- Season 6 1972-01-14
- Season 7 1973-01-19
- Season 8 1974-01-25
- Season 9 1975-01-17
- Season 10 1976-01-16
- Season 11 1977-01-28
- Season 12 1978-01-20
- Season 13 1979-01-12
- Season 14 1980-01-11
- Season 15 1981-01-23
- Season 16 1982-01-15
- Season 17 1983-01-14
- Season 18 1984-01-13
- Season 19 1985-01-11
- Season 20 1986-01-17
- Season 21 1987-01-09
- Season 22 1988-01-15
- Season 23 1989-01-13
- Season 24 1990-01-12
- Season 25 1991-09-11
- Season 26 1992-01-10
- Season 27 1993-01-15
- Season 28 1994-01-14
- Season 29 1995-01-13
- Season 30 1996-01-12
- Season 31 1997-01-10
- Season 32 1998-01-16
- Season 33 1999-01-15
- Season 34 2000-01-21
- Season 35 2001-01-19
- Season 36 2002-01-18
- Season 37 2003-01-17
- Season 38 2004-01-08
- Season 39 2005-01-13
- Season 40 2006-01-12
- Season 41 2007-01-11
- Season 42 2008-02-20
- Season 43 2009-01-14
- Season 44 2010-01-13
- Season 45 2011-01-12
- Season 46 2012-01-11
- Season 47 2013-01-16
- Season 48 2014-01-08
- Season 49 2015-01-14
- Season 50 2016-01-20
- Season 51 2017-01-11
- Season 52 2018-01-31
- Season 53 2019-01-09
- Season 54 2020-01-15
- Season 55 2021-01-13
- Season 56 2022-01-12
- Season 57 2023-01-18
- Season 58 2024-01-17
Aktenzeichen XY… ungelöst
8.30 90 minutes 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.
The goal of the programme is to throw light on unsolved offences with the aid of viewers. Each episode contains three to five short films, each lasting about ten minutes, in which a real criminal case is reconstructed. The cases are mostly complex ones in which the criminals and chains of events are still unknown. In addition cases are discussed in the studio in which, for example, the identities of criminals or unknown murder victims are sought with the aid of a photo. Viewers can use the telephone or Internet to give information. According to a study by the programme's editorial department, about forty percent of cases shown on the programme are solved.
