Irresistible

Sophie Hartley (Susan Sarandon), a happily married book illustrator, is disrupted by her husband's new co-worker, Mara (Emily Blunt). As Sophie becomes increasingly paranoid about Mara's intentions, she begins to suspect that her husband may be having an affair with his new colleague. The investigation culminates in a shocking revelation: Mara is not just any co-worker, but Sophie's biological mother.