I read this six months ago and don't remember the finer details of this book.
I'm a barrister. I got this book, eager to pick up skills on how to cross examine witnesses better, when in court.
I found the book was more or long/boring narrative of this particular mans great moments in court. He spends a while setting the context of the case, and then tells us how he caught his witness in a trap. The book does what it says - shows some cross examination techniques, but it seems to me that it could have done it in a more academic and accessible way.
This is not the sort of book which sets out in a structure way which is easily accessible at a moments notice, techniques of cross examination. If you had a particular case, and you were trying to think of ways to cross examine a witness, you couldn't dip into this book and find a suggestion. The tip you were looking for would be lost somewhere in the book's prose.
I recommend a book whose author I forget; "Cross Examination in Criminal Trials". It's about £30 brand new (not worth that much), but you can get the old edition cheaper or borrow it from the library.