The Faith of the Millions (2nd series‪)‬

It is a mystery book. A good mystery story which will hold the interest of the reader from the very first, which is well constructed, well sustained, and has something of the dramatic quality, is one of the most desirable things in the way of fiction, and one of the rarest. The Blue Wall is all of this. When the story has added to these good points the quality of real literary worth, of atmosphere, of style, of character and depth, it is something indeed out of the common, and well worth talking about. The Blue Wall is like nothing else you have ever read before.