In 1997, Rebecca Schaper tracked down her brother Call, a man with paranoid schizophrenia who'd been lost without a trace for 20 years. At that point he was homeless, living alone and prone to hallucinations. Schaper, a nature photographer, embarked on a 14-year attempt to "bring her brother back," according to her Vimeo page. She documented the process in a feature length documentary that's currently touring festivals and small screenings. Check out the trailer for "A Sister's Call" below.
CORRECTION: A previous version of this article stated that "A Sister's Call" is set to release in December 2012, as per the movie's IMDB page. It has been corrected to show that the release date is yet to be determined.