This is a serious philosophy book that is also an easy read. The book deals with the moral problem of whether it can be right to kill someone for the greater good: in particular, whether it is right to deliberately push a man off a bridge to stop a run-away tram, which otherwise would kill many others.
In dealing with the ethical issues that this raises, the author takes the reader through the views of Aquinus, Bentham, JS Mill, Foot, Anscombe, Singer and many other past and present philosophers. Later in the book, the author shows how neuroscience, psychology and behavioural economics are playing an increasing role in ethics.
As with all of Edmonds' books, you finish reading it feeling better informed about an important and intellectual subject. Yet he has the ability to keep the reader engaged throughout the book.