The Clueless star passed away in December 2009, shortly after she finished filming psychological thriller Something Wicked.
Murphy's sudden death prompted producers to put the project on hold, but post-production restarted earlier this year (12) and the movie has now been completed, according to industry website Variety.com.
Executives behind the film are now seeking a distribution deal.
The movie, which also features One Tree Hill's Shantel VanSanten and Transformers actor John Robinson, tells the story of an engaged couple plagued by a stalker.
Murphy? passed away at the age of 32 and a coroner reported she died from pneumonia, anaemia and excessive use of prescription medications.