After the father's death, Jess leaves his brother in the bunker alone.
She goes on the beach, and meet someone that looks like her father.
This one gets off what seems to be a latex mask.
Who is it behind? Colin Farrell.
Jess is smiling. Fade out.
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Take a tip from me: don't give up your day job. Or even your schoolwork, since it appears you are unable to tell the difference between female and male.
shareif you want to play that game, my ending would go like this...
Tom: Is he dead?
-long silence
Jess, almost under her breath: He is now.
-Tom shuts bunker door, final shot through window showing Dad is now in pieces