kim min-su ("kim min soo") and ahn su-bin (on soo bin") escaped separately across the river to china. >> did you ever feel in danger? >> su-bin told us she had wanted to leave north korea ever since her father was swept up in a purge when she was 14. >> she said after her father disappeared her family was exiled from pyongyang. >> the government only allowed us to speak to people that were approved by them. of the people you know what is the general feeling among the population? >> in 2013 the united nations released a groundbreaking report on human rights abuses in north korea concluding their abuses - including forced labor deliberate starvation, torture, and the complete denial of the right to freedom of thought quote "have no parallel in the contemporary world" when he was only 9 years old kang chol kwan said he was imprisoned at the yoduk political prison camp with his family. when he was released 10 years later, he escaped to the south >> so there are entire families kept in these places? >> 80 to 120,000 people are reported to be held in these camps on life sentences. the north