My comment feels weird and it's been many years behind everyone
My feeling is that although it is an unsolved case, the murderer is obviously a family of three, of course, a family of three (father, mother, daughter) that has been distorted. The hostess asked them why they did this to them, and they said'cause ur in home'. They didn’t kill the last two boys because they met outside. Their family only drove a small broken car (maybe committing crimes everywhere). They were jealous of those who had houses, mansions and villas.
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