The debate that takes place in this book consists of two professional apologists talking past each other.
Or, to be fair to James White, it consists of one apologist trying to have a constructive debate with another apologist who doesn’t seem to be listening.
If you are hoping to be persuaded by the best arguments that each position (Calvinism/non-Calvinism) has to offer, you may want to keep looking.
On the other hand, if you are looking for a handy reference on what a poor debate looks like in print, by all means, rush out and buy the book. You will not be disappointed.