Crimson Peak is a 2015 gothic romance film directed by Guillermo del Toro and written by del Toro and Matthew Robbins. The film stars Mia Wasikowska, Tom Hiddleston, Jessica Chastain, Charlie Hunnam, and Jim Beaver. The story, set in Edwardian-era England, follows an aspiring author who travels to a remote Gothic mansion in Cumberland, England with her new husband and his sister. There, she must decipher the mystery behind the ghostly visions that haunt her new home.

In 2006, a spec script written by Del Toro and Robbins was sold to Universal Pictures, with Del Toro set to direct. Development was delayed due to scheduling conflicts. The film was described as a "ghost story and gothic romance" heavily inspired by other horror films, such as The Haunting, The Innocents and The Shining. Principal photography began at Pinewood Toronto Studios in Toronto, Ontario on February 10, 2014, with additional filming in Hamilton, and ended on May 16 that year. The film was produced by Legendary Pictures and Del Toro's production company, Double Dare You Productions.

Crimson Peak premiered at Fantastic Fest on September 25, 2015, and was released in the United States on October 16, 2015 in standard and IMAX formats. The film received generally positive reviews from critics, with many praising the production values, performances and direction, but criticized the plot and characters. It grossed $74 million worldwide against its $55 million budget. The film received three nominations at the 21st Empire Awards, including Best Horror. It received nine nominations at the 42nd Saturn Awards, winning three, including Best Horror Film, Best Supporting Actress for Chastain and Best Production Design for Thomas E. Sanders.