By SAM WEBB
Office workers step into a lift, their minds on what tasks the day holds, or perhaps their plans for dinner after work.
Suddenly the lights dim and, with the sound of tortured metal, the floor falls away into a black abyss.
Fortunately, this isn't footage of a terrifying accident but a stunt by a technology company to show how clear the picture is on its new computer monitors.
Ominous: The floor buckles, the light flickers and hidden speakers simulate the sound of distressed metal
South Korean conglomerate LG combined nine of its new IPS monitors and fixed them to a floor of a lift in an office building.
After the floor button is pressed, the monitors show a hyper-realistic animation of the floor collapsing into the darkness.
Vertigo: The man is taken aback as the floor tiles seemingly fall away into the yawning mouth of the lift shaft
The effect is heightened by an ominous flickering of the lights and sound effects of shrieking metal giving way.
For a split second, the hapless victims are fooled into thinking they are about to plunge down into the shaft.
Many jump back or grab the railings when the panels appear to drop away, and one women yelps in terror.
However, the fear is short-lived and most laugh about it afterwards, although one woman storms out of the lift with a face like thunder.
Calm before the storm: These two colleagues are relaxed when they get in the lift
Illusion: They leap to the side and grab the railings when the fake disaster strikes
Yikes!: The floor appears to fall away into a long, dark shaft. The woman is stunned
source: dailymail