Fentanyl: The synthetic opioid being bought on darknet

The prescription painkiller fentanyl is being used to get a high, and has killed 112 people in the UK since 2016 as a result.

Most of the supply is produced in China and then secretly shipped to the UK where users buy it through the darknet.

Robert Fraser's mum tells the BBC what happened to her son, and what can be done to stop it happening to someone else.

  • Health