LIVING AS THE CHILD OF AN INFAMOUS SERIAL KILLER

Airing On "20/20," Friday, August 20 on ABC

Melissa Moore grew up with an adoring dad. But behind the loving fa�ade was a violent killer with a secret that would only be revealed years later - her dad, Keith Jespersen, was one of the nation's most infamous serial killers, known as the "Happy Face Killer" for the anonymous confession letters signed with a whimsical smiley face logo. Jespersen's notorious five-year, five-state murdering spree resulted in the deaths of eight women.

Melissa speaks candidly about her life as a teenager after learning her father killed multiple women; her fears when she decided to have children of her own; and her message for those who bear the burdens of the sins of their fathers. "Logically I know he is the father that raised me and he is a serial killer, but� to combine the two, it's just not possible for me," she says. Melissa also takes "20/20" back to the scene of her youth, near a place where her father also killed and disposed of one of his victim's bodies.

The report also includes an interview with Jespersen via phone from prison, who recalls his killing spree in chilling detail.

ABC News Correspondent Juju Chang reports on "20/20," FRIDAY, AUGUST 20 (10:00-11:00 p.m., ET) on the ABC Television Network.

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