That was still enough to finally dislodge James Cameron’s third Pandora epic from its monthlong perch atop the box office. “Avatar: Fire and Ash” isn’t going to come close to the box-office heights of the previous two “Avatar” movies. “Return to Silent Hill,” the third installment in a horror series kick-started with 2006’s “Silent Hill,” opened with $3.2 million. Though Sony released the 2006 film and Open Road distributed the 2012 follow-up, the low-budget “Return to Silent Hill” was put out by Iconic Events. “Return to Silent Hill,” $2.7 million8.