The Idol House of Astarte

In this classic short story, Miss Marple attempts to solve the unexplainable murder of a baronet who was stabbed, with no one around him in sight . . .
During the first meeting of the Tuesday Night Club at Miss Marple's home, her guests present real tales of mystery, and the wise hostess attempts to solve them from the comfort of her armchair. Next up with a spooky story is local clergyman Dr. Pender . . .
Years ago, Pender attended a costume party at the estate of his college friend, Sir Richard Haydon. Haydon believed that sacred rites to ancient goddesses were once performed on his grounds. Later, socialite Diana Ashley surprised the guests by dressing as a priestess to Astarte. But even more shocking was Haydon's sudden fall. He was stabbed in the heart with no one close enough to attack him, and no weapon to be found.
Although decades have passed since the bizarre murder, Miss Marple and her club may be able to deliver justice for Sir Haydon . . . Originally published in the United States in Detective StoryMagazine in 1928, "The Idol House of Astarte" appeared in Christie's short story collection, The Thirteen Problems, in 1932.