Milat was in 1996 convicted over the murders of backpackers Caroline Clarke, Joanne Walters, Deborah Everist, James Gibson, Gabor Neugebauer, Anja Habschied and Simone Schmidl.
Wolfgang Mueller spoke with Simone's distraught mother when she was visiting Australia in search of her missing daughter who was then only 21 years old.

Simone Schmidl: Das 21 Jahre alte Mädchen wurde von Ivan Milat brutal ermordet. Source: AAP