Simpson has not paid the $33.5 million judgment against him in the civil case. His NFL pension and his Florida home cannot legally be seized. He and the families of the victims have wrangled over the money in court for years.
The victims' families could go after the proceeds from the book's sales to pay off the judgment. But one legal analyst said that there are ways to get around that requirement - such as having proceeds not go directly to Simpson.
"Clever lawyering can get you a long way," said Laurie Levenson, a Loyola University law-school professor and former federal prosecutor who has followed the case closely.
Levenson said that the criminal-justice system's protection against double jeopardy means that Simpson's book, explosive as it may be, should not expose him to any new legal danger. She added that Simpson could create an extra layer of insulation from any legal worries by presenting the story hypothetically.