Read more: TIL Molly was played by Cary Kemper, Ellie Kemper’s sister! Here’s an interesting post from https://reddit.com/r/DunderMifflin/comments/1b4d2ge/til_molly_was_played_by_cary_kemper_ellie_kempers/: Continue here: TIL Molly was played by Cary Kemper, Ellie Kemper’s sister!