24-year-old Gregg Smart is found brutally murdered inside the entrance to his condo; investigators arrest three local teens who have a connection to the victim's wife, Pam, and begin suspecting her of orchestrating her husband's murder.

The investigation reveals that Pam Smart slept with her husband's triggerman, 15-year-old Billy Flynn; salacious details emerge in the first broadcast gavel-to-gavel murder trial in America.

As the trial continues, the prosecution plays secret audio recordings of Pam Smart that shock the courtroom; Pam takes the stand in a desperate bid to prove that Billy acted on his own motivations -- and killed Gregg in a lust-filled rage.

Pamela Smart's 1991 trial for the murder of Greg Smart was the first of its kind to be broadcast from gavel-to-gavel. In her own words, Pam tells The Missing Pieces about life in prison, being a media sensation and why she still insists she's innocent.