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 6 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Jean Smart Jean Smart, who stars in the FX series Legion as Melanie Bird, will take on the role of Mrs. McLanden. Previous Next Start Slideshow A Simple FavorMovie CastingMovies