HBO’s trailer for The Pet Cemetery Murders: A Ghost Story returns to a 1985 Louisiana cold-case murder. The three-part documentary follows interviews and archival material as investigators reopen the case.

A man sits for an interview in The Pet Cemetery Murders: A Ghost Story.
A documentary interview in the trailer.

HBO says reopening the investigation uncovers a history of violence and bloodshed in a community outside New Orleans. Philip Cairney writes and directs the series, produced by Lightbox for HBO Documentary Films.

A uniformed officer appears in the trailer.
A uniformed officer in HBO’s trailer.

The trailer moves between interviews and archival photographs as the investigation revisits the case.

A man wearing glasses sits for an interview in the documentary.
Another interview in The Pet Cemetery Murders.
An archival photograph shows a house with a front porch.
An archival photograph of a house in the trailer.

The series premieres Oct. 11 in the United States on HBO and HBO Max. Its three parts arrive on Sundays.