Dorcas Gwata started work in Britain as a cleaner in a hospital in Edinburgh. Overcoming the various obstacles and challenges to her in joining the NHS, she became a clinical nurse specialist, with global health experience. Then in 2013 she was asked to fill a role created by the mayor of London, Boris Johnson.

The role was to explore the mental health needs of young people and their families affected by gang culture.

This book gives, chapter by chapter, the stories of some of these young people as seen by Dorcas. There are those who have been victims of knife crime, sexual exploitation, county lines and human or drug trafficking. 

She writes of individuals but their particular circumstances and experiences highlight wider issues. For example, to what extent those coming before the courts are neurodivergent, or how children in socially disadvantaged famiies are at higher risk of autism. Also, how private school children are groomed by gangs because they are 'less likely to be identified' by the police.

It's a tough read in terms of recognising the complex, often chaotic events in these people's lives, the sense of entrapment and the lack of meaningful and lasting escape routes. But it's well presented, and it's hugely inspiring in knowing that this need is being addressed, and that there are people like Dorcas who are so committed to this work. The problem seems enormous but it can be solved when the will is there. And the incentive is clear. 'When our young people thrive, we all thrive,' she writes.

Excerpts from the book were featured as the BBC Radio Book of the Week earlier this month.