Friday, December 4, 1926, famous crime novelist Agatha Christie goes missing. Avid mystery novel fan, and aspiring journalist at lady’s magazine Gentlewomen’s Gazette, Helen Casewell, feels pigeonholed, carrying cups of tea and writing housekeeping articles. Helen dreams of covering criminal investigations and other grittier topics.  She sets out to uncover the truth behind Agatha Christie’s disappearance, in the hopes of forging a career as a reporter.