Ending explained *spoilers*
I thought this was a brilliant movie, one of my few problems with it was the complexity of the ending which did not cohere to rest of the film which had a reasonably simplistic plot. Here is my interpretation of the ending:
Mandy and Emmet had come to despise the group of friends at the ranch due to their attitudes and behavior in general and the male character's approaches towards Mandy. They encompassed the struggles Mandy had against the male advances towards her in high school (the first part of the film) and the female characters were simply enforcing this with their behavior. Emmet was in love with Mandy and so felt the same. Behind the scenes, they formed a suicide pact involving killing the group and then each other. His book showing his obsession with Mandy would be his legacy "for the cops and copycat killers" and Mandy would die with her reputation intact. The drugs they were to take would allow them to experience euphoria in death.
Mandy however, did not want to die in this manner and she may have hated Emmet in the same way she hated the other characters. Emmet was simply part of her larger plan. So she made it appear that Emmet had killed the group in a frenzy of jealousy. This is why she could not kill Emmet in the way they planned - the police would expect a struggle. This is the same reason she did not kill Garth - she needed someone to corroborate her story with the police.
The only questions I have over this interpretation are:
- Did Emmet believe Mandy would just die with the rest of the world believing she died just as part of his killing spree legacy?
- Was Emmet planning to kill Mandy while mortally wounded and then bleed to death?
- Was there another reason to them taking the pills before death?
I saw this at the cinema last night so that is based on one viewing - I may have made a few errors.
Comments, questions or answers to my questions?