These books are the outcome of about four decades of research and deliberation on the subject by the authors, Dr Lopa Mehta and (the late) Dr Manu Kothari. Long known for their unorthodox outlook, and as erudite teachers and retired heads of the department of Anatomy at Mumbai's Seth GS Medical College, the authors have maintained their usual lucid, illuminating and thought-provoking style of explaining the grammar of the coronaries and heart attack in the present works. They have questioned the conventional wisdom of interfering with the coronary system in order to set the circulation right, one of the cherished certainties of modern medicine. They have clearly asserted that such ideas are based largely on false premises.