20/20 tries to get to the truth behind the lies in two cases. "Truth or Consequences" looks at the murder of Gregg Williams by his wife Michele who first claimed he was killed by an intruder and later claimed it was suicide. "Be Careful Who You Break Up With" looks at how an obsessive cyber-stalking ex-girlfriend got a man fired and arrested.
When a woman who was abandoned as a newborn searches for clues about her biological family, she listens to several shocking confessions, has a family confrontation and finds two siblings who were also abandoned as infants.
The family of a missing Colorado woman believes evidence points to her boyfriend's involvement; messages to the woman's mother suggest the case has inspired someone to attempt extortion.
Five years after escaping from the kidnappers who held her captive for 18 years, Jaycee Dugard sits down with Diane Sawyer to discusses her new life and reintegration into society.