The stories of men and women from around the country who have dramatically transformed their lives by adopting new, healthier lifestyles and losing up to half of their body weight, and the impact it has had on their loved ones.

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From tricks of the trade for saving money on nuptials, and "Groomzillas" to extreme wedding proposals and wedding mishaps, "20/20" provides viewers with a behind-the-scenes look at the cutthroat wedding industry.

Understanding Transgender Children

Manti Te’o hoax, Beyonce Lip-Sync Scandal, an a real-life Norman Bates who impersonated his dead mother to keep her New York home.

Born into the spotlight for better or worse, “20/20″ reports on the kids of celebrities.

Nathan Carman Describes Seeing Mom For the Last Time at Sea; Police Question Nathan Carman in Grandfather John Chakalos' Murder; Insurance Company Won't Pay Nathan Carman's Claim For Boat Lost at Sea

Reports on the crippled Carnival cruise ship Triumph and the eight-day trip to misery that ensued for the more than 4,000 passengers on board.

GMA co-anchor Robin Roberts shares her personal story and comeback to the anchor chair five months to the day she underwent a bone marrow transplant to treat myelodysplastic syndrome or MDS, a rare blood disorder.

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A story of how using a GPS system can backfire and send you down the wrong paths; a report on the 2012 Thanksgiving 140-car pile up that claimed two; an investigation into the accuracy of CARFAX; Russian dash cams.

A case involving two high school football players that were found delinquent by a Juvenile Court for the sexual assault of a 16 year old girl; exclusive interview with defendant Ma'lik Richmond.

From psycho exes to your Facebook 'friends'.

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A man that was used to taking advantage of women online met his match; a motorcyclist claims a former female IRS agent made a deal to make his tax problems go away for intimate contact; 20/20 looks into disability con artists.

Latest information regarding the Boston Marathon tragedy; reports on the importance of split-second decisions.

An unidentified man claims he survived a carjacking done by the Boston Marathon bombers, April 23, 2013.

Get ready for a big dose of shocking disclosures… from doctors and hairdressers and even burglars, the people in your neighborhood reveal some surprising secrets of their trade.

Amanda Knox discussing her life before, during and after the trial that made her international headlines; three stories that talk about serious neighborhood problems.

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When a woman tries to divorce her husband, TV producer Richard Shenkman, he reacts with a violent rampage that includes stalking, burning a house to the ground, and kidnapping his estranged wife at gunpoint.