WOMEN UNITE AND TAKE MATTERS INTO THEIR OWN HANDS TO STOP AN HIV-POSITIVE MAN FROM KNOWINGLY INFECTING OTHERS, ON "SUNDAY 20/20: THE SIXTH SENSE," SEPTEMBER 11 ON ABC

Three very different women from a Dallas suburb -- a fiery athletic redhead, a stay-at-home grandmother and a buttoned-up business woman -- take matters into their own hands after discovering that their boyfriend had not only lied to them about his relationship with at least a dozen other women, but he had knowingly infected them with HIV. Elizabeth Vargas' report airs on "Sunday 20/20: The Sixth Sense," SEPTEMBER 11 (9:00-10:00 p.m. ET) on the ABC Television Network. (OAD: 9/19/09)

"20/20" is anchored by Elizabeth Vargas and Chris Cuomo. David Sloan is executive producer.