14 - Red Lamp by Mary Roberts Rinehart

When English professor William A. Porter unexpectedly inherits a grand seaside mansion from his late Uncle Horace, his curiosity is piqued by the unexplained circumstances surrounding his uncles death. Along with his wife and niece, he decides to spend the summer in the propertys lodge, renting out the main house. As darkness falls, the quiet seaside neighborhood takes a sinister turn, with strange occurrences and eerie events becoming the norm. At the heart of these mysteries is an ominous red lamp, a subject of local folklore and believed to cast a malevolent spell. Can Professor Porter unravel the truth behind these oddities, or will he himself become a suspect in this webs of mysteries?