It's been 10 years since Scott Peterson was sentenced to death for the murder of his eight-months-pregnant wife, Laci, and their unborn child.

Last night in a special one-hour report, Geraldo Rivera took an in-depth look at the riveting case and Peterson's surprisingly privileged life on death row in San Quentin prison.

Nancy Mullane, author of "Life After Murder: Five Men in Search of Redemption," is one of the few outsiders to see Peterson's life inside San Quentin.

She told Geraldo that the convicted killer has a single cell inside an exclusive part of the prison, the best accommodations he could hope to have.

Mullane explained that Peterson has access to outdoor facilities, including a protective roof, and even a basketball court.

"I saw this quite, I would have to say, buff-looking young man with his shirt off," Mullane said. "And he was playing basketball. He looked like you were watching some college athletes out on a neighborhood court play basketball."

"You've been around a lot of prisons," Geraldo said. "It sounds to me like what you describe is the cushiest environment that you've seen."

Mullane revealed that there are some death row prisoners in California who are in their cells 23 or 24 hours a day without getting out and without having contact with other prisoners.

"They are not having the life Scott Peterson is having. Scott Peterson has an exclusive life inside San Quentin," Mullane said.

She added that Peterson has not shown remorse or taken responsibility for his heinous crime.

Watch more above.