I think the 'twist' is intended to leave it open to speculation , so you can't really tell what really happened but you are left thinking about it. A very clever concept in my opinion - good 'ol psychological thriller/horror. If you read through the other comments you'll notice that alot of people agree with you. ;)

LULZ

Kai - last of the brunnen g from Lexx - a 2000 year old Divine Assassin:
" I have killed mothers and their babies. I have killed great philosophers, proud young warriors and revolutionaries. I have killed the evil, the good, the intelligent, the weak and the beautiful. I have done this in the service of His Divine Shadow and His Predecessors and I have never once shown any mercy."

The list has covered a lot of the greats. I agree with hannibal at #1 - he's a real montser of humans in the true (fictional :) sense. There are some very insightful references to fine food & the part of the brain where the 'manners' are located....Oh and if you would prefer: the alternate ending of Hannibal has Lecter on the plane - with all limbs attached. John Doe should be at #2 a very complex and emotionally disturbed character.

HP Lovecraft's ' From beyond ' should be on this list