Murder Underground by Mavis Doriel Hay

Miss Pongleton was not a well-liked woman. She was cheap and somewhat mean, even walking to the next London Underground station to save a penny on fares. Once there she would be one of the few commuters using the stairs while the rest waited for the elevator.
Even though she wasn't the friendliest person, it still came as something of a shock when she was found on those stairs strangled. With her dog's leash no less.
Her renters are shocked and immediately start guessing what might have happened. Of course, the police arrest the wrong man first but then seem somewhat befuddled. We get a look at the strange movements of the woman's nephew and supposed heir (but is he really?) as well as the ways that his friends and family are helping him.
It was an odd sort of mystery not really fairly clued (until the very end) and definitely from the "classic" era of mysteries and indeed, I learned of it from the Classic Mysteries podcast.

Three stars
This book came out November 1