Iago and Montresor--Twins Separated at Birth?

Fiorella has been thinking literary again. In a past life, she taught English Lit, and it's all still roiling around in her brain.

In particular, she's been thinking about the story construction in which the villain tells the story. Shakespeare used this plot device in Othello, with Iago announcing in the very first scene that he was a dirty dog and was going to bring the noble Moor to his knees. Poe did the same thing in "Cask of Amontillado" when Montresor tells us from the get-go that Fortunato is in for it.

Hmmm. Wonder if Fio could set this up in any of her own stories.