Shin Dong-hyuk grew up in North Korea’s Camp 14, one of the monstrous slave-labor prison complexes in which the world’s most tyrannical regime has crushed hundreds of thousands of its citizens, working them to death in conditions of excruciating brutality and degradation. Though the North Korean concentration camps have lasted far longer than their Soviet or Nazi counterparts did, Shin is the first person born and raised in one of them to have successfully escaped abroad. His story is told in journalist Blaine Harden’s “Escape from Camp 14,” a heart-crushing reminder that man’s inhumanity to man has no limit.