The Annapurna Pictures' project is based on Maria Semple's 2012 best seller that unfolds in via emails, letters, FBI documents, correspondence with a psychiatrist and a bill for an emergency room visit involving the main character, according to the Hollywood Reporter.
Semple's novel, which was adapted by 'Fault in Our Stars' writers Scott Neustadter and Michael H Weber, revolves around an agoraphobic architect and mother named Bernadette Branch who goes missing prior to a family trip to Antarctica. The book is narrated by her 15-year-old daughter Bee Branch.