Looking at the title of this book you probably think that you have heard it before, and you would be correct as there is a film made of this with the same title, starring Alastair Sim as the detective. More than likely you have seen the film, after all it has been on tv countless times and I know that I have seen it quite a few times.
This book was the second outing for DI Cockrill, who apeared eventually in seven novels. This book is also considered to be Brand's masterpiece. First published in 1945 this book is set in the midst of the war. In a military hospital in Kent, a few miles from the nearest town an influx of civilian patients are admitted due to an explosion in the town and not enough space in the local hospital. When one of these patients dies on the operating table, could it just be one of those things, or something more sinister? DI Cockrill is called in to investigate, and having to remain at the hospital overnight due to air raids comes to the conclusion that the death was murder, especially when a sister turns up dead.
As the suspense grows and a nurse is nearly killed, Cockrill manages to save another civilian patient from being killed. The field is narrowed and it can only be a handful of doctors and nurses who could have commited the crimes. We start to learn more about these individuals and what possible motives they could have, if any. Cockrill knows who the murderer is and why, but he cannot prove it. Segregating these people from everyone else he hopes to wear them down until he can get a confession, but will it work?
Full of twists and turns, a lot of red herrings and psychological insight this is a great little mystery. If you like the old style 'Golden Age of Crime' books then you should really have this one in your collection. If you haven't seen it then
Green For Danger [DVD] is a great film to watch.