That’s what I was thinking too - see if he won’t confess to Natalee while there and give her folks some peace.
Similar to the Green River killer in my neck of the woods. He got out of the death penalty by showing the police where many bodies were buried to bring peace to the families of the missing women. He may think he made a great deal, but he’s still gonna have to die SOME day. On that day he will face the REAL judge.