Attention is focussing on Ian Brady's mental health advocate, Jackie Powell, who has claimed in a television documentary that he wrote a letter to the mother of one of his victims.
A mental health advocate is not the same as a lawyer. Their role, as defined by the Department for Health, is as follows:
A specialist mental health advocate, who helps qualifying patients understand the legal provisions to which they are subject under the Mental Health Act 1983 (the 1983 Act) and the rights and safeguards to which they are entitled, and helps those patients exercise their rights through supporting participation in decision-making.
Police first became aware of the possible existence of a letter from Ian Brady to his victim's mother in late July.
An advocate for Moors murderer Ian Brady has revealed the possible existence of a letter that may reveal where one of his victims is buried.