A MOM GOES MISSING AND HER SECRET LIFE AS AN ESCORT IS REVEALED, ON "PRIMETIME: FAMILY SECRETS," TUESDAY, JULY 31 ON ABC

And: Mary Fulginiti Reports on a Nine-Year-Old Egyptian Girl Forced Into a Life of Labor in California

Plus: A Husband's Verbal and Physical Abuse of His Wife Documented on Tape

From a single mother of three gone missing to a modern-day Cinderella forced to be a slave in California, the season finale of "Primetime: Family Secrets" reports on three women's secret past and what happens when the truth finally surfaces, TUESDAY, JULY 31 (10:00-11:00 p.m., ET) on ABC.

At 34 years of age, Paige Birgfeld was juggling teaching dance to kids and selling cookware with taking care of her own three children in Junction, Colorado. She also may have been an escort -- a shocking revelation that her father, among many, never learned until she went missing more than a month ago, on June 28. Within days of her disappearance, investigators discovered her car and several personal items, but since then there has been no break in the case. Police have a range of persons of interest -- who are not suspects, but include her two ex-husbands and a man named Ralph Jones, a convicted felon. As it turns out Jones knows Birgfeld because he was a client from her secret night life as a topless masseuse. This week, as the investigation enters its fifth week, friends and family wonder if they'll ever get the answers they want. John Qui�ones reports on what may have happened -- was she kidnapped, did she run away, or did her disappearance have to do with the secret life she was hiding?

Then: The idea of slavery existing in upscale America would shock most people, but for an exclusive gated community in Irvine, California, slavery was a harsh reality. At nine years old, Shyima was an Egyptian girl sold into slavery and shipped from Cairo to her masters' mansion in Orange County. It began with a contract between Shyima's parents and Nassar Ibrahim, a 51-year-old entrepreneur, whereby she would work for his family for 10 years. Shyima was confined indoors and forced to live in the garage. She slept on a filthy mattress with nothing more than a bucket serving as both a toilet and wash basin. But in 2002 an anonymous tip led to her rescue by Detective Tracy Jacobson. Five years on, Shyima is a bright high school student, an articulate English speaker and a new U.S. citizen adopted by a caring California family. The Ibrahims are in federal prison. Shyima speaks with Mary Fulginiti about her ordeal and how her adjustment to life as a normal teenager has been.

And: A wife enduring the terror of physical and verbal abuse at the hands of her husband is rarely seen - except when a husband documents the terror. Such is the story of Susan, who three years ago, at the age of 42, was the target of her husband Ulner's unimaginable cruelty. Ulner ordered their 13-year-old son to videotape his verbal and physical tirades, resulting in a gritty 51-minute tape capturing glimpses of what is so seldom seen - domestic abuse behind closed doors. Now Susan, the mother of three, talks to Diane Sawyer about why she stayed in the abusive relationship, how she blamed herself, how she finally broke free, her relationship with her kids today, and what she is doing now to help other women. This report originally aired in October 2006. It is currently nominated for an Emmy Award and has already won a Gracie Award.

David Sloan is the executive producer of "Primetime: Family Secrets."