Two other girls vanished from the same neighborhood. Ashley Summer, age 14, in 2007 and Christina Adkins, age 18, in 1995. Ariel Castro bought his home in 1992.
http://www.charleyproject.org/cases/s/summers_ashley.html
http://www.charleyproject.org/cases/a/adkins_christina.html
It will be no surprise if we find out there are other girls, other men and other locations.
Nor would it be a surprise to find some of the girls are no longer alive