India, Oct. 11 -- In 2009, a mysterious phone call changed everything in Dorothy Lou Thompson's cold-case murder. The caller claimed, "It was her ghost that I saw." That's one of the true events explored in HBO's new three-part docuseries, The Pet Cemetery Murders: A Ghost Story. The secrets in this cemetery refused to stay buried.

Based on true events from 1985, the docuseries dives into the complex murder case of Thompson, who owned a pet cemetery in eastern St. Bernard Parish. The cemetery was rumoured to be cursed for generations and harbouring dark secrets. The mystery, which remained unsolved for years, was revisited after a witness came forward with a harrowing story about Thompson's ghost.

The series features perspectives of ne...