What inspires young men like Adam Lanza to commit their unspeakable crimes? Dr. Oz talks to Dr. Drew Pinsky and an FBI profiler reveal what science tells us about their minds. Plus, what we can do to prevent future tragedies.

Read Dr. Oz's blog about coping with post-traumatic stress disorder.

Whether it's falling or flying, Dr. Oz has the answers to why you have the dreams that you do and what they might mean.