How to talk to Jehovah's Witnesses

The latest news out of the UK is that the Watchtower has called the people who leave it "mentally diseased."  But who is really blind here and who is telling the truth?  Is it the Jehovah's Witnesses whose prophecies and practices have never been fulfilled or accepted by society (no blood transfusions) or is it the people who recognize the lies?  Tonight, Dr. Walter Martin and his lifelong friends, Bill and Joan Cetnar (ex-Jehovah's Witnesses) show how to reason with Jehovah's Witnesses.