Janab’s Key To The Law of Evidence, Advocacy and Professional Ethics, written by Justice Datuk Dr Hj. Hamid Sultan Bin Abu Backer, is now successfully in its 5th edition updated up to the third quarter of 2018. It is a must for all legal practitioners, whether in criminal or civil practice, and equally for all law lecturers and students. A mastery of this subject is indispensable for any advocate. Dato’ Seri Chan Sek Keong, the former Chief Justice of Singapore, in his foreword to the fourth edition of this book said “For those who ... do not have personal knowledge of the more recent developments ... whether through legislation or court decisions, this book provides the key to open the treasure-house of ... case law on ... the Evidence Act.” The law of evidence is so linked with advocacy and professional ethics that this edition, revised by Dato’ Mah Weng Kwai and prominent legal practitioners Arun Kasi and Datuk Joy Appukuttan, has been added with an additional part to cover advocacy and professional ethics. Apart from that, this book is divided into two parts on the law of evidence. One covers all aspects of the law of evidence in 61 sub-chapters and another is a commentary on all the 167 sections of the Evidence Act 1950.