The Night Master by Robert Sampson

 

This has been one of my favorite studies of The Shadow.  Maybe it's because it's a hardcover with an awesome dust jacket or that it was something that I tracked down back in the day (without aid of the interweb) which made it all the more sweet to get.  I read this every couple of years.  There are better books but sometimes one just gets attached, for whatever reason, and cherishes something.  If you don't have a copy I wish you luck in tracking down one for a reasonable price.