Myra Savage has The Plan that will finally draw attention to her extraordinary powers as a medium and her husband Bill is responsible for executing The Plan. ‘Seance on a Wet Afternoon’ outlines the execution of this horrific plan, which the reader can see is doomed from the start. Character development is spare, as is the couple’s backstory. What precipitated Myra’s diabolical idea? It’s a mystery so I assumed it was her overweening ambition. What leads Bill to do his wife’s bidding, even when he know it is the wrong thing to do? That’s a mystery, too, unless he thinks he can mitigate the worst of the consequences. The book doesn’t offer much more than the movie, but it’s definitely a page-turner.