This is one of the best mysteries I've ever read. It is very compact in its writing. There are no wasted words in it. There is not too much plot. There is no - nor a need for - filler. It even has a slight mystery at the end. With apologies for an odd way to put it - odd though being just right for a Robert Bloch mystery - it is exactly the right size. His language use is perfect as well. Robert Bloch earned his rep. He wrote quite well.