INSIDE THE WORLD OF MONKEY KIDS, ON "PRIMETIME: THE OUTSIDERS," TUESDAY, JULY 1

Plus: The Extreme Edge of Morbid Obesity

And: A Teenager's Death Surfaces on the Web as a Gruesome Joke

Can a monkey take the place of a child? "Primetime: The Outsiders" goes inside a world where parents adopt monkeys as substitutes for human children. David Muir reports on monkeys who are raised as surrogate children, dressed by their "parents" in tutus and pushed around in baby carriages. Muir speaks with two women and examines the unusual caretaking that raising a monkey entails. One "mom" had her monkey attached to her arm for months at a time, while the other woman found herself having to take the precautionary measure of removing her monkey child's teeth to avoid being bitten. As cute and adorable as they seem at first, what happens when the monkeys grow up? These once diaper-wearing babies can quickly turn parental dreams into never anticipated nightmares. One woman faces a heartbreaking decision of whether to keep her monkey or give him a better life in a monkey sanctuary. "Primetime: The Outsiders," which features reports on people who live by their own rules, in worlds unfamiliar to the rest of society, airs TUESDAY, JULY 1 (10:00-11:00 p.m., ET) on ABC.

Then: What's life like for someone weighing more than 1,000 pounds? "Primetime" reports on how morbid obesity happens - how people can grow without stopping and whether they can ever recover from it. To understand this condition John Qui�ones travels to Mexico to meet Manuel Uribe, considered at one time the heaviest man in the world, weighing 1,234 pounds. Manuel is desperately trying to lose weight, experience life and make it out of his home, where he is bedridden. "Primetime" cameras are along as Manuel ventures out for the first time in years. John Qui�ones updates this report, which originally aired in January 2007.

And: It's every parent's nightmare - losing a child. But what happened to one Orange County, CA family is unthinkable. After an 18-year-old girl crashed her parents' car and died, the police accident scene photos surprisingly and -- to her parents' horror -- made their way onto the internet. The family has spent a year trying to get these shocking photos off of websites. But who are the people who post these graphic death photos, and why would anyone want to look at them? Correspondent Jim Avila updates this report, which originally aired in December 2007.

David Sloan is the executive producer of "Primetime: The Outsiders."