As the 20th Century's odyssey for a cheap and plentiful energy supply draws to an end without success, a Cal Tech scientist has produced a masterful and readable account of the events that led to cold fusion's villification in the scientific community, and of more recent experiments that show. . . well, something. The door is left open on whether the technology actually causes fusion and whether it will ever become a useful source of energy. In any event, the name at least will live on in the form of application server.