If by 'definitive' Fisher and his publishers mean wordy, then it's certainly a fair description of this hefty tome.
Having said that, Cooper fans will enjoy this thoroughly researched and affectionate portrait of one of the greatest British entertainers of the last century. Some of the chapters on the ins and outs of Cooper's career, dealt with in extraordinary detail, might have benefited from some gentle editing. Equally, some may feel they would have liked more on Cooper the man. Fisher does eventually get round to delving into Cooper's personal life, his alcoholism, his other health problems and, of course, his infidelity, but only in any depth during the penultimate chapter.
It's an uneven book, but clearly a work of love by the author and he succeeds in reminding the reader what a great and fascinating man Cooper really was. Fisher retells countless jokes and routines to great effect, so much so that you can almost relive Cooper performing them. And that in itself makes this book a marvellously rewarding read. If Ken Dodd can still fill theatres up and down the land, imagine what Tommy Cooper could do if he were alive today. The mind boggles.