tom lippert died in 1999.at is, carla evans drops a bombshell. >> she said "pam, there's something i need to tell you and i want to be totally up front with you about whom my cousin was. >> tom kidnapped this young woman from purdue university. >> reporter: that's right. tom lippert was a convict. a kidnapper who gained national attention in 1975, sentenced six years in prison for abducting a young woman. the details would unhinge everyone. he held her for three weeks, sometimes in a metal studded box. >> for me, that was as devastating as finding out. >> reporter: after getting out of prison, lippert married a nurse, jean, and settled in this quiet salt lake neighborhood. he terrorized the neighbor kids. >> we were so scared. we would walk on the other side of the road. >> reporter: tessa murdoch says lippert threw rocks, broke windows and even made the local news. >> did you throw rocks? >> absolutely not! >> i never knew why he hated kids so much. >> reporter:: ironic, because hating kids didn't stop him fr

i but i wasn't. >> reporter: lippert served time for kidnapping charge.- >> i think it was intentional. >>. >> reporter: she said her husband would drink and turn violent. she believes there may be other victims. >> i think if he did it once he probably did it many times. >> i figured out if he did this once a month for the nine years he was there that would be over 100 children. >> our hope is that the university would inform the families that used that clinic during the years that tom lippert was there. >> they have not? >> they haven't. >> reporter: in a statement, the university of utah says there is no evidence to indicate this situation extends beyond the case in question. the university says the clinic now is closed and the records are gone. still, it's offering free paternity tests to concerned patients. the branuns may not what went so dramatically wrong. >> it went dramatically right because we have her. >> i think annie and i are closer because of this. i love annie. >> it doesn't change the fact he's her father. he brought her up and they love