Daniel Dominik Kaiser-Küblböck, who later became Lana Kaiser, was a German pop singer who rose to fame on the RTL casting show Deutschland sucht den Superstar (DSDS). She has been missing since September 9, 2018, after an accident on a cruise ship. Daniel Dominik Kaiser-Küblböck, who later became Lana Kaiser, was a German pop singer who rose to fame on the RTL casting show Deutschland sucht den Superstar (DSDS). She has been missing since September 9, 2018, after an accident on a cruise ship.