It looks like an innocent photo of a woman cleaning windows.
But it is shared by a police force with the warning that it could be a sign of something more sinister.
They shared the picture with the message: "See someone who is always inside the house cleaning? Are they never out of the house by themselves?
"This could be an indicator of domestic servitude: many victims will not know that they are exploited and need you to be a voice for them."
Domestic servitude is a "specific type of forced labor, which takes place in a private home," says the Task Force on organized crime.
He says: "People can be promised occupation and instead find themselves trapped in someone's home, without any means of completing their" contract "or exit.
"Victims are forced to perform domestic tasks, provide childcare or do heavy work, often without salary and with little access to care, space or personal choice.
"Often the victims of domestic slavery are enslaved in the house of a person with a similar ethnic background, while many women victims of domestic slavery are also victims of sexual trafficking".
Slavery warnings have increased in Wales in recent years, with a senior official warning that "forced labor, sexual exploitation and the collection of human tissues are under way in Wales right now".
Dozens of cases are reported every year.
In 2017, mother-of-two Omonigho Idegun described how she was trafficked in the United Kingdom from Nigeria and locked up in a home where she was forced to work, before escaping to Wales and building a new life.
And in 2014, Darrell Simester described how he was held in modern slavery for 13 years on a farm outside Newport, sleeping in a rat-infested shed and washing in a horse trough after working 15 hours a day without any pay.
Now Avon and Somerset Police are urging people to be vigilant, as reported by Somerset Live.
Strength says that seeing someone who is always cleaning up and never leaving the house alone can be a victim of domestic servitude.
The force said that people suspect that something is not right, you can contact the police at number 101 or the modern Slave Helpline at 08000 121 700.
The National Crime Agency reported that 5,145 potential victims were presented via the national reporting mechanism in the United Kingdom in 2017.
The reports showed potential victims of trafficking from 116 different nationalities.
The most common type of exploitation recorded for potential victims was the exploitation of labor, which also includes criminal exploitation.
A police spokesman said: "We rely heavily on the public to be our eyes and ears, to be in places we can not always be.
"Intelligence plays a huge role in our fight to tackle crime: the information received from the public could be the missing piece of a puzzle or the break in a case.
"Today's slavery is happening all over the UK and we need your help to protect some of the most vulnerable people in society who too often have no voice."