Freida McFadden is the pen name of American author and physician Sara Cohen, best known for fast-paced psychological and domestic thrillers built around secrets, manipulation, unreliable perception, and sharp reversals. Her breakout success came with The Housemaid, which introduced... Millie Calloway and became the center of a bestselling series marked by claustrophobic settings, moral ambiguity, and twists that reframe everything the reader thinks they know. McFadden has also written numerous standalones, including The Inmate, The Locked Door, and Never Lie, along with medical humor novels that reflect her professional background. Her appeal lies in short chapters, accessible prose, cliffhanger momentum, and suspense that turns ordinary homes, marriages, workplaces, and memories into dangerous territory.