A Woman Found Dead on a Rotating Bed
Around noon on November 19, 1976, a housekeeper named Ying was cleaning rooms at a hotel in Hong Kong.
She reached room number two and knocked on the door.
There was no answer.
After calling out for housekeeping, Ying used her master key to open the door.
She immediately heard an electrical whirring sound.
The hotel had unusual circular beds fitted with electric motors. Guests could switch on the motors and make the beds rotate.
Ying initially thought the guests had simply left the motor running.
But when she opened the door fully, she saw something horrifying.
The bed was spinning at high speed.
A naked woman was lying on it.
She was dead.
The movement of the bed was causing her body to bounce around as blood was thrown across the room.
The discovery soon became a murder investigation.
Police Identify the Victim
The woman was identified as 22-year-old Guo Minglu.
She had been stabbed more than two dozen times.
A medical examiner initially estimated that she had died at about 11:00 a.m., roughly an hour before her body was discovered.
Investigators also found an important clue.
About 20 minutes before Guo checked into the hotel, she had received a pager notification from a man named Lu.
Police then contacted Guo’s sister.
The sister confirmed that Lu was Guo’s boyfriend.
That gave investigators their first major suspect.
Guo’s Secret Relationship
Lu was married and had children, but he had secretly been dating Guo for about six months.
The relationship had reportedly become serious.
But the couple had recently been arguing.
Guo’s sister also told police that Lu had a violent temper.
For Chief Wong Ting Pong of the Hong Kong Police’s major crimes unit, the circumstances looked suspicious.
Lu had contacted Guo shortly before her death.
He had been in a relationship with her.
And Guo had been brutally stabbed.
Police needed to find him.
Police Find Lu at a Fish Market
Chief Wong eventually located Lu at a nearby fish market.
Lu was working behind a counter and cutting fish with a knife.
Wong asked if he was Lu.
He said yes.
Wong then told him that Guo had been murdered.
Lu admitted that he had been having an affair with her.
He also admitted that he had been with Guo at the hotel.
But he denied killing her.
His reaction also caught Wong’s attention.
Lu did not appear particularly shocked by the news.
He continued working with the fish while answering the questions.
The circumstances made him look even more suspicious.
Lu Gives Police an Alibi
Chief Wong asked Lu where he had been around 11:00 a.m., the estimated time of Guo’s death.
Lu said he had already left the hotel.
According to him, he had left around 3:00 a.m. and gone to work at the fish market.
His co-workers could confirm it.
Police checked his story.
Lu’s boss and co-workers confirmed that he had been at the fish market for several hours by 11:00 a.m.
That created a major problem.
Everything about Lu looked suspicious, but the timeline appeared to exclude him from the murder.
Chief Wong left the fish market without arresting him.
But he was not convinced that the case was over.
A Detail on the Way Back Changed the Investigation
As Wong drove back to the police station, he kept thinking about his meeting with Lu.
One detail kept coming back to him.
The fish.
Lu had been cutting fish while discussing a murder involving a knife.
But the fish also reminded Wong of something more important.
Guo’s body had not been lying still after death.
She had been on a rapidly rotating bed.
That raised a crucial question:
Could the movement of the bed have affected the estimated time of death?
Wong contacted the medical examiner and asked for the estimate to be reconsidered.
What Is Livor Mortis?
After death, blood stops circulating normally because the heart is no longer pumping.
Gravity then causes blood to settle in parts of the body. This postmortem process is known as livor mortis.
Forensic investigators can use livor mortis, along with other physical changes, to help estimate the time since death.
But Guo’s case was unusual.
Her body had been placed on a bed that was continuously rotating.
Instead of remaining still, her body was being moved and shaken by the spinning bed.
Wong suspected that this unusual movement may have interfered with the normal development of livor mortis.
If that happened, the original estimate of Guo’s time of death could have been wrong.
The Time of Death Changes
The medical examiner reconsidered the circumstances surrounding Guo’s body.
The estimated time of death was changed from approximately 11:00 a.m. to 3:00 a.m.
That eight-hour difference completely changed the investigation.
At 11:00 a.m., Lu had an apparent alibi.
At 3:00 a.m., he did not.
Lu had told police that he left the hotel at around 3:00 a.m.
The new time of death therefore placed the murder within the period when Lu was still connected to the hotel.
His alibi had effectively collapsed.
The Rotating Bed Became a Crucial Clue
Investigators ultimately determined that Lu was responsible for Guo’s murder.
The unusual rotating bed was no longer just a strange detail at the crime scene.
It had become an important part of the investigation.
The theory was that Lu used the rotating bed after the murder to interfere with the estimation of Guo’s time of death.
His work as a butcher also led investigators to believe that he understood how the movement of a body could affect forensic examination.
The plan depended on investigators accepting the later estimated time of death.
But the unusual condition of Guo’s body raised questions.
Once the time of death was reconsidered, Lu’s alibi no longer worked.
Why the Time of Death Mattered
The case shows how important the timeline can be in a murder investigation.
At first, investigators had strong reasons to suspect Lu.
But suspicion was not enough.
The original time of death gave him an apparent alibi.
The investigation changed only after Chief Wong questioned whether that estimate was reliable.
Moving the estimated time of death from 11:00 a.m. to around 3:00 a.m. changed the meaning of the evidence.
The same suspect who appeared to be at work when the murder happened was now connected to the period when the murder was believed to have occurred.
The Case Ends With a Conviction
Lu was ultimately found guilty of Guo’s murder and sentenced to death.
The investigation began with a disturbing discovery in a hotel room.
It then focused on a boyfriend who appeared suspicious but had an apparently solid alibi.
The breakthrough came from an unusual feature of the crime scene.
A rotating bed had moved the victim’s body after death.
That detail caused investigators to question the original estimate of the time of death.
Once the timeline changed, the evidence against Lu changed with it.
The case remains a striking example of how a seemingly minor detail at a crime scene can alter an entire murder investigation.