The Parole Board says all indications point to the rapist known as the Beast of Blenheim reoffending as soon as he is released from prison in September.
Stewart Murray Wilson, 65, is almost at the end of extended jail time for rape, bestiality, stupefying and ill-treatment of children over a period of 25 years. He denies the crimes.
In a just-released report, the Parole Board says there is a strong likelihood of further similar sexually deviant behaviour from Wilson as soon as he has the opportunity to engage in it.
His lawyer says predicting reoffending would be nothing more than a guess.
The board says Wilson has been positively obstructive of efforts to help him and refused to cooperate in developing any protective measures or say where in the country he intends to live.
Wilson was jailed for 21 years in 1996 and became legally eligible for release in 2008. The Parole Board invoked a special clause in the Parole Act that allows a dangerous prisoner to be further detained.
The right to apply that expires on 1 September, when Wilson will be released subject to conditions that will apply until 2015. The board will set the conditions in July.
The Probation Service has applied to the High Court to have him placed under an extended supervision order for up to a decade beyond that.
The lawyer for Stewart Murray Wilson says the considerable commotion about the serial rapist's looming prison release will no doubt make it more problematic.
Andrew McKenzie says that discussion about the release is not helping things.
He says Wilson's risk of reoffending is influenced by a number of factors, and one of them is the reception or otherwise he receives on release.