The story unfolds around the elderly Mrs. Bentley (Helen Westley) and her sharp-witted lawyer, who respond to a newspaper ad from a recently unemployed and unmarried engineer seeking work “doing anything legal.” The pair arrange a meeting with the man, the enigmatic Alexander “Lucky” Downing (Wayne Morris), and soon present him with a strikingly modern offer: $1000 to pretend to be engaged to Mrs. Bentley’s granddaughter, Elinor Bentley Fairchild (Alexis Smith, for one month. Lucky, though puzzled by the oddness of the proposal, needs the money and agrees to take the job, stepping into a web that feels more like a trap with every passing moment.
What Downing doesn’t know is the eerie pattern surrounding Elinor’s past engagements. Her first fiancé, Johnny Eggleston, vanished in a mysterious drowning. The second, Paul Myron (David Bruce), was left paralyzed after a car accident and has been confined to an iron lung ever since. The third, Alan Winters, succumbed to a fatal snakebite while staying on the 18th floor of a Boston hotel. The town’s papers have nicknamed Elinor the “Kiss of Death Girl,” and the rumors speak of a malevolent Smiling Ghost preying on her suitors. Lil Barstow (Brenda Marshall), a tenacious reporter who has been following the case, has even coaxed Myron into discussing the matter with her, hoping to warn Lucky before tragedy strikes again.
As Lucky travels with a nervous valet, Clarence, to the Bentley mansion, Lil races to intercept them at the train station. Before she can reach them, Elinor herself sweeps Lucky into the mansion’s ornate foyer, and the young woman’s warmth is immediately disarming. Inside, Lucky meets the formidable household: the diabolical great-uncle Ames Bentley (Charles Halton), who proudly showcases a macabre collection of shrunken heads and hints at a disturbing appetite for a particular “Negroid specimen”; the troubled cousin Tennant Bentley (Richard Ainley), who has his own problems with drinking; and the cautious couple Hilton Fairchild (Roland Drew) and his wife Rose (Lee Patrick), who stand to lose a portion of their fortune should Elinor marry.
That night, a confrontation arises when Tennant objects to Lucky sleeping in what had been his room, prompting Lucky to switch to a different chamber. A figure emerges through a hidden wall panel—the figure everyone calls the Smiling Ghost—and attacks Tennant, who seems to be the wrong target in the chaos. In the ensuing confusion, Lucky encounters Lil outside and learns of the fates that have haunted Elinor’s beaus, wondering aloud whether these are merely accidents. Lil counters with a grim line: it is “more than an accident when a cobra strikes a man on the 18th floor of a Boston hotel.” Convinced that danger is real, Lucky plans to escape with Clarence, who has found the semiconscious Tennant in a cellar trunk and is eager to depart. But Elinor’s confession that she has fallen in love with him changes his plan; he decides to stay and help uncover the truth, even if it means facing a killer in disguise.
To solve the mystery, Lucky enlists Lil’s help and seeks out Paul Myron, the paralyzed former fiancé who has become the key to unraveling the ghost’s identity. Paul’s tale confirms the presence of a vengeful spirit that might be linked to Eggleston’s fate, and he suggests the ghost resembles the late John Eggleston. While Lucky rejects the idea of a literal ghost, he accepts that a human hand could be behind these staged fatalities. The journey takes them to Eggleston’s cemetery crypt, where they discover it empty, heightening the sense of danger. A brutal attack on Downing within the crypt—and a dramatic rescue by Lil—only deepens the mystery and cements Lucky’s determination to see the case through.
With the heat turned up, Lucky proposes a dangerous plan: pretend to wed Elinor as a lure to draw the killer out of hiding. The plan hinges on timing, nerve, and a willingness to risk everything for Elinor’s safety. In a tense and clever conclusion, the Smiling Ghost is finally unmasked as Paul Myron, the very fiancé who was supposed to be a helpless victim of fate. The unmasking brings a twist of fate for Elinor and Lucky, entwining their futures as the truth about the past envelopes the present, and the couple faces the path ahead together.
Throughout the escalating drama, the film builds a mood of suspense with a blend of romance and danger, anchored by a cast whose performances illuminate the mounting dread and the characters’ enduring resilience. The ensemble dynamic—Mrs. Bentley’s protective, calculating household; Elinor’s fragile legend of doom; Lucky’s practical bravery; Lil’s tenacity; and the various family members’ foibles—creates a tight web of motives and misdirections that keeps the viewer guessing until the final reveal. The ending reshapes the narrative from a chilling eerie mystery into a cautious, hopeful alliance, as Elinor’s love for Lucky becomes the ultimate resolution to the string of accidents and the menace that haunted her love life.
In short, the story blends noir-ish intrigue with a classic whodunit spine, driven by a clever male lead who steps up to shield a wary heart, a tireless reporter who won’t be silenced, and a collection of relatives whose ambitions and fears illuminate every shadowed corner of the Bentley estate. The film sustains a steady tempo of suspense, character-driven tension, and a satisfying reversal that redefines the legend of the Smiling Ghost and clears the path for a future built on trust and mutual devotion.
