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A FEW OF OUR FAVORITE STINGS...

Airing on "20/20" Friday, January 9 on ABC

"20/20" exposes wrongdoings via undercover operations and hidden camera investigations including a murder for hire, a handicapped parking fraud, shortcomings in the bedbug extermination industry, and a classic "blind man's bluff." "A Few of Our Favorite Stings" airs on "20/20" on FRIDAY, JANUARY 9 (10:01 - 11:00 p.m., ET) on the ABC Television Network.

· With money on her mind, Jaqueline Luongo was charged with murdering - and then impersonating - her roommate. The key witness: Luongo's friend and confidante Maria Calderon. For Luongo that was one witness too many, and police say that from jail she tries to put out a hit on Maria. But when the Broward County Sherriff's office gets wind of the scheme, they give "20/20" rare access to their operation as they go undercover with a fake hitman, a fake lawyer, and even a fake corpse to give Ms. Luongo a special surprise. Matt Gutman reports.

· The California DMV lies in wait along popular hiking routes, looking for able-bodied motorists parking in coveted handicapped spaces. Jim Avila and "20/20" cameras are there as the cops swoop in.

· "20/20" outfits a Brooklyn brownstone with hidden cameras to put exterminators and their heavily-marketed bedbug dogs to the test. Is that beagle really smelling the dreaded pest, or is he just hungry for a snack? Paula Faris reports.

· Federal agents rigged up a Social Security office with hidden cameras to catch Lawrence Popp as he came in to be assessed by a local benefits administrator -- making bold, categorical claims about his inability to drive or read because of blindness, moments before he hit the freeway as he headed home. Rebecca Jarvis reports on one man caught on camera defrauding social security.

"20/20" is anchored by Elizabeth Vargas and David Muir. David Sloan is senior executive producer.