Books like The Shining Pyramid

Vaughan asks Dyson for help since he finds strange signs outsides his home (mysterious fling stones arranged in specific patterns, drawing of peculiar eyes). Besides a little girl is missing. She was on her way home taking a shortcut never to be seen again. Who is responsible for the disappearance of the girl? Dyson has a close eye to every detail and comes up with an astonishing solution. What about the shining pyramid pin and the 'Little People'? It's a fine detective story with some supernatural eerie elements. I really enjoyed reading this story by Arthur Machen after having read 'Whitechapel' where he was used as one of the main characters. Really recommended!