Ruth Ware (born 1977), alias for Ruth Warburton, is a British psychological thriller author. Her novels include In a Dark, Dark Wood (2015), The Woman in Cabin 10 (2016), The Lying Game (2017), The Death of Mrs Westaway (2018), The Turn of the Key (2019), One By One (2020), and The It Girl (2022). Both In a Dark, Dark Wood and The Woman in Cabin 10 were on the U.K.'s Sunday Times and The New York Times top ten bestseller lists. She is represented by Eve White of the Eve White Literary Agency. She switched to the pen name Ruth Ware to distinguish her crime novels from the young-adult fantasy novels published under her name, Ruth Warburton.