"The Good Liar" is a 2019 thriller film directed by Bill Condon. The story follows a con artist named Roy Courtnay, played by Ian McKellen, who targets a wealthy widow, Betty McLeish, portrayed by Helen Mirren. As their relationship develops, secrets from Roy's past begin to surface, leading to unexpected twists. The film explores themes of deception, trust, and the complexities of human relationships. It is based on the novel of the same name by Nicholas Searle and features a blend of suspense and drama, keeping viewers engaged until the final reveal.