John Walsh hunts traffickers who hold women and children against their will; an undercover sting rescues a woman from her pimp; the Vancouver, Wash. police attempt to rescue women who are being trafficked.
A professional billiards player is killed; a jealous lover is accused of killing a teacher; John Walsh looks into the impact of social media on the search for missing people and the tools used to track down pedophiles.
A child rapist and murderer flaunts his crimes in a series of clues targeted toward other children; an alleged killer sends a letter to a newspaper confessing his guilt.
