This book is pretty much does what you have come to respect from Norman Geisler, its concise, clear and to the point.There are thirteen chapters that cover pretty generally the sort of questions Christians would generally expect to get during evangelism or formal exchange.
The book gives a good grounding for further reading on the following subjects, Gods existence, other views about God such as pantheism, the problem of evil, miracles Jesus, the Bible, Archaeology, Science, the Afterlife, truth, logic and morality.
Obviously the book can't cover vast amounts of detail for each of the above subjects but its certainly ideal for getting a good grounding for further investigation.
Worth the money and a space in the library!