The book by Mr Rhodes, is hands down the best book I have found to help guide you into thoughtful conversations with those trapped by the scripture twisting mind control of the watchtower organization. Mr Rhodes begins with the need for Christ-like love for its members and then proceeds to lay biblical foundation for any response to the cults teachings. Favoring the Socratic method of conversation wherein one ask questions to teach truths the book will guide you confidently into interaction with those who knock on your door.
This is one of my favorite series and this expanded version is a real good book. It goes through all the false teachings of the Watchtower and he corrects there screwed up interpretations with the true meaning of the Biblical passages.