"20/20" GETS "LOST," FRIDAY, MAY 6 ON ABC

Elizabeth Vargas Goes on Location of the Pop Culture Phenomenon, "Lost"

Plus: John Stossel Reports on the Billion Dollar Bottled Water Industry; And a Very Special Mother's Day Story

"20/20" offers a chance to catch up on the twists and turns of the hit ABC series "Lost." Elizabeth Vargas interviews the stars, creators and producers to get a closer look at some of the "Lost" secrets that viewers may have seen - but not really noticed -- during the smash first season. Co-creator J.J. Abrams even answers a question regarding one of the theories about the location of the mysterious island. The report airs on "20/20," FRIDAY, MAY 6 (10:00-11:00 p.m., ET) on the ABC Television Network.

Also: Water, water everywhere... so why do people pay so much money for something they can get for free? Some people interviewed say that they buy bottled water because it tastes better than tap water, and others say bottled is better for you than tap. "20/20" tested five bottled water brands, ranging in prices, against New York City tap water to see if people could really tell the difference in what they were drinking. John Stossel reports on this billion-dollar-a year industry.

Plus: "20/20" follows one woman's hope to someday see her conjoined twin girls separated, and also talks to the Dallas doctor who has flown the conjoined twins from Italy to Dallas, TX, hoping to make this mother's dream come true.

"20/20" is anchored by Elizabeth Vargas and John Stossel. David Sloan is the executive producer.