Zac Bissonnette drew on hundreds of interviews to write a book about "mass delusion and the dark side of cute."
The U.S. Supreme Court is set to rule next month on whether to ban life without parole for minors convicted of murder.
The cases center on two 14-year-olds — one in Alabama, the other in Arkansas.
The decision could have a ripple effect across the country, affecting more than 2,000 prisoners, if the Supreme Court decides to ban life without parole for all juvenile offenders.
One of those prisoners is 37-year-old Joe Donovan of Massachusetts, who has been behind bars for 20 years.
This segment was produced by Deb Becker.