her lover, mark stern, was actually mark weinberger, an international fugitive and he was apparently nything. >> first think, okay, i go to the police. i know where he is. i'm sorry, mark, but -- >> you need to tell the truth. >> exactly. >> i think it was a very torturous decision, but i think at the end of the day she felt she had an obligation. i give her a tremendous amount of credit. she did the right thing. >> it was inside this police station that monica spaconi told police her lover, perhaps her lover was a wanted man. was she crying? >> not exactly. but she was very, very scared. who really was this mark she knew? >> colonel davida says soon after monica left the office, a local rental agent walked in, also complaining about a man named mark who hadn't paid his rent in three months. most important, the agency had a copy of mark weinberger's real passport. >> he left a copy of his real passport? >> a copy of his real passport, yes. >> and he's a fugitive on the run. >> yes. you can't rent a flat if you don't leave a copy of your document. >> not only did police now know monica

mark weinberger was never shy about telling the people of northwest indiana who he was and what he wasneither is ken allen, the man who was weinberger's chief nemesis before he vanished and later became one of his most persistent pursuers. >> he knew he was mutilating patients to bill the insurance companies for surgeries that weren't necessary. it really is evil. and he needs, he deserves to be punished. >> ken allen you'll remember is the lawyer phyllis barnes hired to sue weinberger. in court documents allen alleges weinberger misdiagnosed phyllis's condition and gave her a surgery she didn't need while missing the cancer that killed her. >> he needs to understand it wasn't just the insurance companies that were harmed. it was paem. lives were destroyed. people were hurt. >> phyllis barnes it turns out was just the tip of the iceberg. once mark weinberger fled malpractice lawsuits began flooding in to lawyers. among those new clients were kayla thomas and her mother valerie. in 20038-year-old kayla began having headaches so severe they caused vomiting and extreme sensitivity to ligh

according to pulitzer prize winning writer buzz who wrote this story, mark weinberger was a nerdy kiddriven by sibling rivalry to outshine his brothers. >> mark figured, the way to be the apple of my parents' eye is to do well in school. he did very well at scarsdale high. frs he went to the university of pennsylvania, then went to ucla medical school where he thrived. >> he could have established his ear nose and throat medical practice anywhere, but in 1996 he chose merrillville, indiana. it was close enough to chicago that he could live there and have chauffeurs drive him to his office every day. but most important, he could count on the air pollution in northwest indiana to provide a steady stream of patients with sinus problems. >> in northwest indiana where you're breathing in the pollution, you've got high pollen and extreme changes in temperature, it's not unusual to see a high degree of patients who suffer from sinus problems. >> suzette dennington, weinberger's top medical assistant worked closely with him day in and day out. >> he was an excellent physician. >> what do you