EXCLUSIVE: Nicole Kidman is back at HBO with another high-profile limited series based on a novel, The Perfect Nanny. Kidman and Pen15 co-creator and co-lead Maya Erskine are set to star in the project, which HBO landed in a very competitive situation. Erskine is the creator and writer of the limited series, based on the book of the same name by by Leïla Slimani. Legendary Television is the co-studio with HBO.