Larry Lawrence, a radio broadcaster accused of murder, finds himself on the run and stows away in a trunk bound for Cuba. The trunk belongs to Mary Carter, an heiress who has just inherited a supposedly haunted mansion on a remote Cuban island. Larry and Mary quickly team up when they discover that someone is trying to scare Mary away from her inheritance. As they travel to the island, they encounter a series of mysterious and eerie events that suggest there might be more to the tales of ghosts and supernatural occurrences than mere superstition.

On the island, the duo is joined by Alex, Larry's loyal valet, and Geoff, Mary's lawyer. Together, they explore the decrepit mansion, facing hidden passageways, unsettling noises, and shadowy figures that add to the growing tension. As they gather clues, a story of family secrets, treasure, and betrayal begins to emerge. Ultimately, Larry and Mary must untangle the web of deception surrounding the mansion and confront the truth behind its haunted reputation.