I'm Working as a Sleep Tester in a Haunted House.

Summary

Summary of the passage: A detective investigates the disappearance of a businessman Cao Zong's granddaughter. During the investigation, they learn about complex family dynamics, including Cao Zong's daughter's murder and her husband's infidelity. A mysterious incident occurs when another daughter visits with a young boy, whom Cao Zong refuses to acknowledge. The detectives notice a strange black mist around the child's forehead, suggesting a supernatural encounter, and decide to investigate the family further to uncover the truth behind the granddaughter's disappearance.

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