A Pact with The Devil, also known as a Deal with The Devil and a Faustian Bargain, can refer to any scenario in a work of fiction where a character, villainous or otherwise, is driven to ask the dark forces for help. A hallmark of a Pact with The Devil is that it always comes at a cost to the user, leading to either death, eternal damnation or any other unsavoury ending. The best example of a Pact with The Devil is in the story of Faust who made a deal with Mephistopheles.