vibeke morrissey: and we got some things here, this is aria's bed. and this is all her things.his is her bathtub, and this is all her playing things and baby gym. but we have never used it before because she has never been home. reporter: ken olsen makes no secret of his past involving drugs, violence and prison terms. he himself grew up in state homes. their daughter was to be a living symbol of the parents' new beginning. vibeke morrissey: they said, so well, that ken was too dangerous for me and aria, so they took me and aria from the hospital. but after one week, they decided that, no, i'm not a good-enough mother, either, so, they took aria. reporter: now the baby lives with a foster family. her parents are allowed only occasional visits. but why? before aria was born, neighbors had called the police on the parents because of a domestic disturbance. and ken had a record. in norway, that's grounds enough to call in the youth welfare office. agnete krogvig: in cases where the youth welfare office has intervened, it's because of a report and information from doctors or other