Indescribable

The movie contains no on-screen copyright notice, but searching the U.S. Copyright Office records yields a Registration#/Date of PAu003664269/2013-02-08 with 2012 in the Date-of-Creation field, so the film would be ©2012 by Thorn Crown Project LLC.

When Blynn unlocks the family mail box, pulls out the drawer, and takes out the letter from Walter (at around 45 mins), he pushes the drawer closed and leaves with the letter, forgetting the key in the drawer's lock. He leaves the key in the lock again when he later finds a letter from the publisher (at around 1h 22 mins).