This post serves a double purpose: firstly to reassure you that the promised spoiler-heavy discussion about The Box Office Murders, a.k.a. The Purple Sickle Murders (1929) by Freeman Wills Crofts is on the way, and secondly to let you know about the next spoiler-heavy review coming in April.
When digging his garden to lay a foundation for a new sundial, quiet, unostentatious bachelor Marcus Pottermack uncovers a previously-unknown well. That same day, he receives yet another demand for money from the man who is blackmailing him, and it’s only a matter of time before one problem is used to solve the other. And when curiosities about the man’s disappearance are raised in passing with Dr. John Thorndyke, it’s only a matter of time before that pillar of truth is on the trail of quiet, unostentatious Marcus Pottermack. And yet, for all its conventional-sounding setup, Mr. Pottermack’s Oversight (1930) is a delightfully unconventional inverted mystery.
The Invisible Event 