I've read many books in the Ben Hope series but have always been left with a few unanswered questions regarding his sister, who was kidnapped in Africa on a holiday. This book answers those question and how they were reunited.

Following a training incident at his place in France, Ben takes over a security job in the hope of not being sued for millions. But the job doesn't go well as it was poorly organized from the beginning. However, the job gives him a clue to his missing sister and one he embraces and runs with.

This brings him into conflict with a shadow group that  is pursuing the aims of a Nazi general, who went missing at the end of the war, that was working on a secret project

I really enjoyed this and is a must if one enjoys the Ben Hope series.