"Whoever asks, shall receive answers, whoever asks correctly, shall receive the correct answers."& But correct answers can vary complete. The book assists those involved in regards to questioning in a target-orientated manner. It explains the method of analysing the content of statements and how to recognise lies and mistakes. How to deal with foreigners and their statements is also covered. Furthermore, there is a chapter on the possibilities and (standard) legal restrictions of the preparation of witnesses by lawyers, as well as a chapter in regards to having discussions, especially over the telephone.

A. Wendler, judge at the Higher Regional Court, well known from numerous TV appearancesDr. H. Hoffmann, retired judge at the Higher Regional Court