Motive v. Opportunity: A Miss Marple Short Story

At a meeting of the Tuesday Night Club, attorney Mr. Petherick relates an incident involving the late Simon Clode, a wealthy client. Obsessed by his granddaughter’s death, Clode turns to spiritualist Eurydice Spragg to contact the young girl in the afterlife. Clode then decided to write a new will designating Eurydice as the benefactor and excluding his other nieces and nephew. To everyone’s surprise, when the envelope containing the will is opened, the paper is blank. The Tuesday Night Club gets on the case. Did we mention Jane Marple is one of the members?