Elias Acevedo Sr., 49, agreed to life terms in prison for killing two Cleveland women, Pamela Pemberton, 30, and Christine Adkins, 18, and admitted raping others, including three of his daughters.
He also proposed a series of interviews with behavioral analysts, also known as profilers, who work with the FBI's National Center for the Analysis of Violent Crime, who will study him throughout his life through records and interviews, the (Cleveland) Plain Dealer reported Thursday.
"He doesn't know if what he did could be prevented, but he wants to know," Acevedo attorney Bret Jordan said. "He truly, truly feels terrible about what he did but doesn't understand why it happened."
Jordan added Acevedo had a horrific childhood and suffered from mental health issues, and does not want to be lumped in with serial sexual offenders such as his former neighbors Ariel Castro, convicted of holding three women captive for a decade.
"He doesn't want to be known like that, not as a monster," Jordan said of Acevedo.
Louis Schlesinger, psychology professor at John Jay College of Criminal Justice, said much can be learned from interviewing serial offenders like Acevedo, who was charged nearly 19 years after his first known victim was killed.
"The FBI is going to want to know what happened, to find out how he eluded law enforcement for so long," Schlesinger said.