joseph treleaven interviewed candra for several hours. >> i concluded that she didn't have any mentalisorder. she was under some stress because she's had a stressful experience, but that was all. >> but why did candra initially vouch for tom brown, the man she now says killed her husband? >> frankly, at first i didn't know what to make about it. i remembered the stories of what happened to the prisoners of war in the korean war and where they were isolated, often brutalized, often for fear of their life. and after a long period of time, some of them would accept the point of view of their captor and then testify against their own country. and they called it at the time brainwashing. >> today, it's known as the stockholm syndrome, named for the hostages held in a stockholm bank robbery who sympathized with their captors, even while their lives were threatened. experts say this occurs to hostages when four things happen -- a traumatic shock, isolation, indoctrination, and the promise of a reward. >> the shooting of the dog gives a very visual and powerful demonstration of the dangerousn