Popsugar Entertainment A Simple Favor A Simple Favour Movie Cast A Simple Favour: The Cast For the Upcoming Adaptation Is Flawless 9 August 2018 by Corinne Sullivan View On One Page Photo 9 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 Andrew Rannells Broadway star and Elijah from HBO's Girls, Andrew Rannells, is confirmed as a cast member, though his role has not yet been released. Previous Next Start Slideshow A Simple FavorMovie CastingMovies