Dante Alighieri might be mostly known for the Divine Comedy. A rather long poem where he in three parts explores a journey through Hell, Purgatory, and Paradise. Sometimes this is referred to Dantes Inferno, but that’s in fact only the first part of the story, the descent into Hell.
Supposedly the best selling novelist of all time. I don’t know if that’s true or not but I wouldn’t be surprised. She’s best know for her crime stories featuring the detective Hercule Poirot and the stories with Miss Marple as investigator. The stories are often complex and the ending is a puzzle of clues puzzled together to get the full picture.