Dark Intruder

The film opens with a mysterious caped figure killing a woman in a dark alley. The brutal murder establishes a serial-killer mood and signals a supernatural threat behind the crimes. The killer disappears into the night, leaving the city in suspense.

Shortly after the opening murder, Kingsford meets with his friend Evelyn Lang to discuss the case and the supernatural angles involved. Their conversation sets up Kingsford as an expert on occult matters and hints at personal stakes for Evelyn. The scene blends tension with the promise of dangerous revelations.

The police enlist Kingsford's help to uncover the demon's scheme, signaling a shift from ordinary investigation to occult inquiry. He begins assessing clues, looking for a supernatural cause behind the killings. The team prepares to confront forces beyond typical crime-solving.

A series of murders of women in San Francisco echoes the 1888 London Jack the Ripper killings. Each crime scene features an ivory-carved statuette of a reptilian head, linking the cases. The pattern deepens the mystery and signals a sinister mastermind at work.

Investigation reveals that with each murder, the demon emerges from the host a little more, as if freeing itself from confinement. The ivory statuette seems to be part of the ritual that unleashes the demon's presence. The gruesome pattern ties the crimes together and increases the danger.

Authorities begin noticing connections between the four victims, suggesting a shared link or motive beyond random killings. This discovery narrows the suspect pool and points toward a single malevolent force behind the spree. The case deepens with the implication of a supernatural agenda.

Kingsford visits Chi Zang, an old Chinese curio dealer, seeking guidance on the occult signs around the murders. Chi Zang shows a mummified Sumerian demon along with a seven-spoked wheel and explains that it will commit seven killings. He implies mystic intervals of time known only to the demon.

Kingsford handles the small mummy but drops it when it becomes hot, leaving him with a scratched hand. The heat demonstrates the demon's dangerous nature and warns of the costs of handling its relics. The incident heightens the mystery around the dealer's artifact.

Kingsford goes to the import shop of Evelyn's fiancé Robert Vandenburg, where they had arranged to meet. A shadow trails him inside, and the caped killer attacks Kingsford in the shop. The confrontation shows that the threat reaches beyond private investigations and into personal circles.

Kingsford fends off the caped attacker, and the figure disappears. The police arrive on the scene, and Vandenburg also arrives, deepening the connection between the case and the people around Kingsford. The incident raises the stakes and accelerates the investigation.

The demon's larger plan is revealed: it intends to return to Earth and inhabit a human body through the killings. The seven-killings framework and the seven-spoked wheel symbolize the demon's cycle and its cosmic ambitions. The discovery reframes the case as a supernatural threat rather than a purely criminal one.

With the seven-killings prophecy looming, investigators anticipate the next murder and race to stop the ritual before the demon completes its plan. The tension escalates as Kingsford and his team close in on the source of the threat. The city braces for a confrontation with a power greater than a human killer.

The film ends on a tense note as the caped attacker strikes again and the authorities, along with Kingsford, prepare to confront the demon. The occult plot hints at a larger danger beyond the current case. The ending leaves the outcome unresolved and poised for confrontation.