For 15 years, this book has been the first that I recommend for colleagues and friends wishing to evaluate the validity of evolution. Its value is that it focuses in ample detail on just one single, critical step in evolution: getting from non-life to life. The book describes work by 4 researchers who attempted to find the mechanism that led to the evolution of the first proto-cell. The authors detail their attempts to find this mechanism that would work against the known processes which the first step in biological evolution would have had to surmount (such as entropy). Each researcher brought a different expertise to the work, so the book is able to bring a number of perspectives to bear on this one relatively narrow issue.
This is not a book for individuals with merely secondary-school maths, biology or chemistry knowledge. The further one has studied in those disciplines (university, post-graduate), the better able he will be to appreciate the research.