This is from a police officer's blog. A true story.
A 16-year-old girl with a mental age of eight is lured to an empty house in London by an 18-year-old man.
Once in the flat, the man calls his mates and a group of them turn up.
Then three of them rape her, giggling and filming the attack on their mobile phones.
When they are finished, they pour caustic soda over her body in an attempt to destroy forensic evidence.
The girl screams with pain - later, on some of the mobile phone footage, the attackers can be heard laughing at this - and eventually lapses into a coma.
For a while, doctors think she will die.
She survives, but the skin has 'sloughed off' her face and body, and has permanent scarring to 50% of her body. A year on, she cannot control her own temperature and suffers from depression, flashbacks and suicidal thoughts.
When arrested, her attackers plead not guilty, so she has to sit, trembling, in the witness box to relive her ordeal for a jury.
When the three men are found guilty, Judge Shaun Lyons talks mighty tough.
"The victim has been left with severe post traumatic stress disorder and many, many physical difficulties," he says. "It is doubtful what form her life will take and whether she can operate fully as a young woman in the future."
According to press reports, at least one of them Muaimba can 'be seen smirking in the dock'.
Then Lyons hands down the sentences.
Rogel McMorris, 18, from Tottenham, North London, is jailed for nine years for rape and grievous bodily harm.
Jason Brew, 19, from Haringey, North London, and Hector Muaimba, 20, from Waltham Forest, East London, receive six years for rape.
Has there ever been a more disgraceful set of sentences than these?
If you live in London, you could find yourself standing next to Brew and Muaimba on the Tube in three years, and next to McMorris in four.
Does anyone think this is remotely akin to justice?