A naked couple fell from the ninth floor of an apartment block before the woman died cushioning her lover's fall.
The couple plummeted to the ground while romping after a party, with one witness saying the woman softened her lover's blow before he then fled the scene.
According to reports, the man staggered back to the flat naked in St Petersburg, Russia, to re-join his friends.
The woman was reportedly left on the floor half naked.
Police who arrived at the scene at first thought they were dealing with a murder and sex attack when they found her wearing no clothing on the lower half of her body.
They also found a TV had been hurled from a flat above, leading them to believe she may have been killed by the falling screen.
However, a witness who saw the bizarre and tragic incident unfold told police they spotted the man and woman having sex on the ninth floor flat before falling out.
The woman had been at a small party in the flat together with the man she was having sex with and two others.
They attracted the attention of the witness when one of the men threw a TV out the window.
The couple then reportedly fell over the balcony during sex and the man landed on top of the unfortunate woman before scrambling to his feet and staggering back to the party.
Police said that, despite landing on a grassed area, the woman was killed instantly.
The man, who only sustained minor injuries, has been tracked down and is currently under investigation, according to reports.