ask yourself where she get the gun . remember what she be teach about the mark mindset when the con be over . the gun have blank and it be provide to her from the very begin . when the patient come back at the end she be suppose to see him drive away in the red convertible and lead her to the gang split up her 80 thousand . the patient be in on the con from the beginning . mantegna do not die in the end the gun have blank . there enough spoiler for you there . this be why people be give it such high rating . it extremely original because of the hidden end and how it con most of the audience .