Their 'trade' does not take place on the streets but at pre-arranged destinations: a bedsit, a car in a lay-by, a public toilet.
In one, which involved at least five women, the liaison between the pimp and farmworkers was a caseworker at the Vermont Department for Children and Families.
Most were mutilated so they had to reconstruct each one.
In 2012, officials extradited him, and he was sentenced in June 2014.