child-like attachment that develops. they come to know that their very survival is dependent upon keeping this person happy and satisfied. reporter: forensic psychologist chris mohandy has studied cases involving stockholm syndrome. he says kidnapping victims like those in ohio bond with their captors in a matter of days. stockholm syndrome got its name during this bank heist in stockholm, sweden back in 1973. when the hostages were freed, they kissed and hugged their captors. two refused to testify against them. perhaps the most famous case involving stockholm syndrome is patty hearst. the newspaper heiress was 19 when she was kidnapped in 1974. she was imprisoned and sexually assaulted. but later robbed a bank with her captors and remained on the run with them for more than a year. you come to a point where you believe any lie that your abductor has told you.
the u.s. the incident is under investigation. at least three people are dead after a boat carrying immigrants from pakistan and afghanistan sank off the italian coast. dozens were rescued and teams are still searching for survivors. now back to the kidnapping of patty hearst. despite the investigation, there has been absolutely no trace of the missing newspaper heiress. summer 1975, over a year after her kidnapping, patty hearst and the harrises hide out in separate san francisco houses, but federal agents are closing in. soliah, kathy soliah who had given a speech at the berkeley memorial for the sla and her brother was shuttling back and forth between these two houses, delivering food and delivering messages and the fbi eventually