 The story is a play on words and was molded from "The Twilight Zone" episode "To Serve Man", which itself was a teleplay of a short story by Damon Knight.Lisa reads "The Raven" by Edgar Allan Poe.In this adaptation, Bart is depicted as the raven, Homer finds himself in the role of the poem's lead character, The Narrator, while Lisa and Maggie are seraphim.