found: The skeleton twins, 2014:title frame (written by Mark Heyman)
found: OCLC, December 23, 2014:(access point: Heyman, Mark)
found: IMDb, December 23, 2014:(Mark Heyman, writer and producer, born and raised in Sante Fe, New Mexico; married since 2010 to Diana Fithian)
found: Independent Filmmakers Project website, December 23, 2014:(Mark Heyman, writer, Black Swan, was born and raised in New Mexico and graduated from Brown University in 2002; after attending New York University's graduate film program, Heyman began working as director of development for Darren Aronofsky's production company Protozoa Pictures)
found: Familysearch.org, December 23, 2014:(Mark G Heyman, born 26 November 1979, resided in Manhattan, New York City, Brooklyn, New York, and Santa Fe, New Mexico)
found: Whitepages.com, December 23, 2014:(Mark G Heyman, age 35-39, residing in Los Angeles, California, at the same address as Diana L. Fithian)
found: Black swan [VR] 2011:screen credit (screenplay by Mark Heyman)
