The Killers Within describes the human fight against infectious bacteria. The book includes the use, abuse and effects of antibiotics in humans and animals, along with a very nice summary of how bacteria gain resistance to antibiotics. The book also discusses phage therapy and various other means that scientists have considered for treating bacterial infections. This is a well written story of the fight against bacteria, including doctor's personal anecdotes and science bits that are not too technical but still full enough to be useful. This book is extremely interesting and informative.