In an interview, series creators Michele Fazekas and Tara Butters reveal how they would have ended the series 'Reaper' had it continued to its conclusion (however many seasons that would have taken). You can read the original article for the actual revelation. I simply want to add a non-spoiler point or two.

Fazekas and Butters have worked with Joss Whedon on 'Dollhouse' and are obviously fans of his, so why not go the 'Buffy' Season 9 route and turn future seasons of 'Reaper' into comic books? It would certainly translate well given the fantasy nature of the show. To reveal the end for the show in an interview, while appreciated by fans, does not seem an economically wise move.

Of course, there is still a great deal that the creators have not revealed. For example, why did Steve prevent Sam from getting out of the contract? And how, if ever, did Andi get out of her agreement with the Devil? There could be a 'Reaper, Season 3' graphic novel yet.