It's been 20 years since 23-year-old River Phoenix died of a drug overdose outside a West Hollywood club on Halloween morning. He left behind a collection of indelible on-screen performances including one that remained unfinished and unseen for two decades. Dark Blood sat on a shelf until director George Sluizer, now 81, recovered it and pieced together a version that debuted at the Netherlands Film Festival in 2012. It has its L.A. premiere on Tuesday, Oct. 29, in Santa Monica. Sluizer recently spoke to EW about Phoenix's last movie.