Barzan Majeed thought he was safe in Iraq but all that changes following the release of this series. Police and prosecutors in Iraq start their own investigation and before long they announce dramatic developments. For reporter Sue Mitchell, and her colleague, former soldier and aid worker, Rob Lawrie, the news signals possibilities for securing justice for some of those harmed in boat and lorry crossings.

This a bonus episode which covers developments following this BBC investigation. In the Kurdish controlled areas of Northern Iraq, Barzan Majeed's smuggling operations come under intense scrutiny. The Deputy Prime Minister, Qubad Talabani, tells the programme that he hopes for a closer working relationship with Europe when it comes to tackling this problem. He has met with bereaved relatives and seen the pain and loss that comes with migrant journeys at the hands of smugglers like Scorpion.

For the UK’s National Crime Agency, the developments signal a real possibility of securing justice for some of the families who have suffered. This is also a chance to progress international links that could result in further arrests. There are other cases like Barzan’s - where smugglers have been tried in their absence by courts in Europe after escaping arrest and returning to Iraq. Those names have now been passed to the authorities in Iraq.

To Catch a Scorpion is a BBC Studios Audio Production for BBC Radio 4 and is presented and recorded by Sue Mitchell and Rob Lawrie.