1. Episode 1

20. Couples on the Run

Walsh profiles dangerous duos wanted for fraud, child molestation or murder.

22. Bad Girls

Female fugitives in America; a dancer proves she will use any weapon to carry out her revenge.

26. Sex Trafficking in America 2

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.

31. Family Secrets

Criminals betray loved ones; a husband's murder-for-hire plot; a father shoots his daughters; sexual abuse.

35. Cyber Tracking

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.

36. The Bold, the Bad, and the Brazen

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.