"SHAMELESS?!" ON ABC'S "20/20," AIRING FRIDAY, APRIL 12

With reports on an internet Casanova, insurance scammers and squatters, "20/20" examines wide ranging behavior that some call shameless, FRIDAY, APRIL 12 (10:01-11:00 p.m., ET) on the ABC Television Network. Anchored by Elizabeth Vargas and David Muir, reports include:

Internet Casanova: He is accused of being a one man wrecking crew, a man who found women and sometimes professed his love. One after another, he allegedly mooched off them for homes, food, clothes, sometimes even sex, not only breaking hearts but sometimes also tapping their bank accounts. But just when Ray Holycross thought he had perfected his Internet Casanova routine, he met his match. Amy Robach with a cautionary tale of reality in the age of internet dating.

"Below the Line" Deductions: "I felt like a cheap whore." Not the words you'd expect to hear from a burly motorcyclist, but that's what 40-year-old Vince Burroughs tells "20/20." Burroughs claims a former female IRS agent offered to make his tax problems disappear in exchange for a little accounting under the covers. Burroughs is now suing the U.S. government. Chris Connelly reports.

Workers' Comp: "20/20" investigates people out to make a quick buck by faking injuries in order to collect disability payments. Private Investigator John Hakala shows Cecilia Vega how these alleged con artists are often busted by surveillance cameras.

Rich Kids Instagram: More and more, wealthy teenagers are using photo sharing site Instagram to pull back the velvet curtain on the world of the ultra rich. As Nick Watt reports, this isn't a manufactured reality show, rather real kids giving a glimpse of their excessive, fabulous lives. And "regular" people can't get enough.

Squatters: Dan Harris follows the story of Andre Barbosa, the man who took over a multi-million dollar foreclosed home on the water in Boca Raton, Florida, making headlines nationwide. Using an obscure law called "Adverse Possession," Barbosa was able to hold prosecutors and police at bay for weeks while frustrated neighbors tried to have him evicted. Barbosa is a member of a group called Divine Province, led by James McBride. Harris has a rare interview with McBride.

Ridiculous Write-Offs: The stripper who wrote off her breast implants� the lawyer who thought he could write off as a medical expense the $65,000 he spent on prostitutes� "20/20" reports on some imaginative deductions.

David Sloan is the executive producer of "20/20."