Kate McCann's 'I want to give an account of the truth' is this some kind of get out clause for the future or the past?. One either tells the truth or one does not, Katy is a pathalogical liar, therefore 'her account' may cover her not strictly telling the truth if she has forgotten what she said in the past, or may say in the future.

http://www.express.co.uk/posts/view/233879/Kate-McCann-I-want-to-give-an-account-of-the-truth-on-Madeleine-