Where do convicted sex offenders live after they’re paroled? Laws vary within the United States and the states themselves, and Miami-Dade County made news the last several years as its ordinance banned registered sex offenders at least 2,500 feet from children, pre-empting the Florida law of 1,000 feet. In 2007 news of paroled offenders making a temporary home without heat and indoor plumbing under the infamous Julia Tuttle Causeway started making headlines. This squalid colony has since been disbanded, leaving many of the former residents homeless and in legal limbo. Novelist RUSSELL BANKS, who lives part-time in Miami, comes in to discuss his 12th novel, “Lost Memory of Skin,” about a lonely young man on recent probation after serving time for a liaison with an underage girl, living under a South Florida causeway with other registered sex offenders, who is a subject of study by a hedonistic sociologist. Banks is the author of “The Sweet Hereafter” and “Affliction,” which have been adapted into feature films.