Strand Releasing has acquired U.S. rights to Matt Porterfield’s family drama “I Used to Be Darker,” three months after its world premiere at Sundance.

“Darker” also had an international premiere at Berlin and won the best narrative feature award at the Atlanta Film Festival.

The film will be released theatrically in the U.S. in the fall.

Story centers on a Northern Irish runaway finding herself in trouble in Maryland and seeking refuge with her aunt and uncle in Baltimore. Deragh Campbell, Kim Taylor and Ned Oldham star.

Ronnie Scheib gave the movie a positive review for Variety at Sundance: “A movie of careful entrances and exits, Matt Porterfield’s “I Used to Be Darker” chronicles the dissolution of a marriage through the eyes of a runaway cousin who drops in unannounced. This outsider presence, catching only fragmented snatches of the overcharged emotions engulfing the family, allows the film ample room to distance an otherwise tense situation.”

Deal was negotiated between Strand Releasing’s Jon Gerrans and George Rush.