Charlie Chan postpones his trip home from government service to Honolulu to help unravel a murder that grips the narrative with a curious blend of crime and séance drama, involving Frances Chan — the so-called Number One Daughter — and the famously easily startled chauffeur Birmingham Brown. The intrigue begins when Mr. William Bonner is found dead in the middle of a seance, a scene crowded with eight witnesses, both seen and unseen, who seem to carry secrets as heavy as the room’s velvet curtains.
Frances Chan, a central witness, is detained as the investigation unfolds, and once the police uncover that she is the daughter of the famed detective, Charlie Chan, the case is formally handed to him at the police headquarters. He hesitates but agrees to take on the problem, driven by a sense of duty and the need to secure his daughter’s release. The room where the seance takes place is a blend of stagecraft and gadgetry, designed to conjure ghostly appearances, and the ensemble of gadgets becomes a character in itself, guiding the audience through the mystery alongside the detective.
As the investigation deepens, the police reveal a puzzling fact: there is no gun found anywhere in the house, and the bullet that killed Bonner did not traverse the body in a conventional way. The seance setting, with its clever devices and misdirections, creates a peculiar web of possibilities that Chan is determined to untangle. The coroner’s examination adds another layer, prompting an experiment to test how the crime could have unfolded under the room’s theatrical conditions. All along, Birmingham Brown provides lighter interludes with his comic relief, a warmth that helps the audience stay connected to the people at the heart of the case while the tension builds toward clarity.
The truth begins to crystallize as Chan orchestrates a reenactment of the crime, placing himself in the seat where the murdered man sat. In a crucial moment, the murderer brushes against Charlie Chan, and the spark of that contact exposes the sequence of events that led to the death. The film resolves with the puzzle finally fitting together, revealing how the lack of a conventional weapon, the peculiar ballistic detail, and the staged ghostly appearances all pointed toward a single, inevitable resolution. What started as a government-related diversion for Chan becomes a methodical unravelling of motive and opportunity, culminating in a verdict delivered through careful deduction rather than spectacle.