Rachel McAdams has made a significant impact in Hollywood over the past two decades, known for her remarkable versatility as an actress. She first captured audiences in 2004 with her roles in *Mean Girls* and *The Notebook*, but her contributions to the horror genre are particularly noteworthy. McAdams made her horror debut in *Red Eye*, directed by Wes Craven, where she plays Lisa Reisert, a hotel manager caught in a terrifying situation. Her performance is both engaging and chilling, showcasing her ability to convey fear convincingly. In *Send Help*, she takes on a more complex role as Linda Liddle, a woman who transforms from a victim to a formidable force on a deserted island. This film highlights her range, as she navigates both vulnerability and strength. Additionally, her role in *Doctor Strange in the Multiverse of Madness* adds to her horror credentials, featuring her in a darker, more intense narrative. While McAdams may not have an extensive list of horror films, her quality performances in these projects affirm her status as an underrated scream queen in Hollywood.