Like many of the other reviewers, I sense the Dr. has blinders on. We are shown only those murderers who tend to support her assumption of multiple personality. Yes, it would be nice to have seen some critical analysis, but this was a documentary, not a double-blind experiment. One should expect to see primarily one view. If you're like me, you can understand that, and be impressed by the access she had to some seriously crazy (insane? evil?) people.