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Tanja Groen disappeared in 1993 at the age of 18 after a hazing party. Her family and friends have been in uncertainty all that time. Until a press release from the police suddenly came out: the cold case has been reopened due to a serious tip. Tanja's body may have been placed in a freshly dug grave at the time. Crime reporter Peter R. de Vries joins Op1, he is the spokesperson for the family and was present at the excavation in Maastricht.