A man hopes to keep his wife from joining a ridiculous cult by catching the cultists in an error of astronomy—which Henry is able to provide.

On the whole, I like this story. The puzzle is reasonable and the solution reasonable, too. I think the description of the Tri-Lucifer cult is a bit overblown and hard to swallow, but that’s a minor point on the whole. (And yes, I know that a lot of people believe a lot of very strange things.)

Found In

	Casebook of the Black Widowers