I am a huge fan of the Agatha Chrisite. I have read almost all her books, and I think she is the one of the best mystery writer ever.
However, this book is a different from her usual murder mysteries featuring Hercule Poirot and Jane Marple. It doesn’t quite live up to the standards and expectations from a Agatha Christie books.From the beginning, the novel has an unusual premise, and as the story progresses, the plot becomes too side tracked with tangential stories and characters.
The main character of this book, Sir Stafford Nye’s arrives at Frankfurt Airport due to a fog delay; as he sits waiting for his flight back to England, he speaks with a mysterious young woman who has a offer for him - she needs to get into England unnoticed or she will be killed, and wishes to borrow his passport and cloak. Sir Stafford Nye agrees but unknowingly has put his life in danger. When he meets the mystery woman again, she is a different person, and he finds himself drawn into a battle against an invisible.
Not a highly recommended Agatha Christie book as she has many master pieces to her name.