Gabby Petito joins other missing women whose partners were investigated

The shocking disappearance of 22-year-old Gabby Petito during a cross country road trip with her fiancé, who was named as a person of interest Wednesday and so far has refused to cooperate with investigators, strikes an eerie resemblance to the early stages of the cases of other missing women over the years whose significant others were eventually implicated or ultimately charged with their murder.