Joseph Frank Smith, 45, agreed to a highly publicized chemical castration as part of hisprobation. Years after that castration he has pleaded guilty to new sex crimes and he is beinginvestigated in connection with up to 75 more. Smith was dubbed the Ski Mask Rapist when he wasconvicted of raping the same woman twice in Texas in 1983. Smith appeared on television's 60Minutes in 1984 as a success story for chemical castration. He commuted to John Hopkins UniversityHospital in Baltimore for treatments. But now it is believed that he is responsible for as many as75 more sex-related crimes since 1987. He has been charged and convicted in two cases. OnWednesday, he was convicted of breaking and entering, aggravated sexual battery, and two counts ofattempted oral and anal sodomy in a 1993 attack, ten years after his original conviction. He facesup to 60 years in prison and a $200,000 fine.