Korb has a master's degree in English literature and creative writing and has written for a wide variety of educational publishers. In the following essay, she discusses how the clues and details in "Suspicion" can point to Ethel Mummery's guilt as well as Mrs. Sutton's.

In her introduction to the The Floating Admiral, which Dorothy L. Sayers and other members of the Detection Club wrote collaboratively, Sayers set out the rules that the mystery writers were bound to follow:

Put briefly, it amounts to this: that the author pledges himself to play the game with the public . . . His detectives must detect by their wits, without the help of accident or coincidence; he must not invent impossible death-rays and poisons to produce solutions which no living person could expect; he must write as good English as he can.

Sayers abided by these rules in her own detective fiction...