The 1965 horror film “Die! Die! My Darling!” (released in the UK as “Fanatic”) marked a significant moment in the career of young actress Stefanie Powers, who was just 21 years old at the time. The film, directed by a team at Hammer Films, featured Powers as Patricia Carroll, an American woman visiting England who becomes terrorized by her deceased fiancé’s religiously fanatical mother, Mrs. Trefoile. The production, filmed during the summer of 1964, was notable for its intense set dynamics and the unique relationship between Powers and the legendary Broadway star Tallulah Bankhead, who was 62 and in the final stages of her film career. Bankhead, known for her immersive acting style and flamboyant lifestyle, affectionately referred to Powers as “Patricia” both on and off set, creating a close bond between the two. The film also highlighted the early career of Donald Sutherland, who played Joseph, a simple-minded handyman, and Peter Vaughan as Harry. Scripted by horror icon Richard Matheson, the role demanded significant physical and psychological endurance from Powers, who received praise for her nuanced performance that avoided typical victim tropes. The production faced challenges due to Bankhead’s declining health and her notorious lifestyle, including a famous post-production session where she struggled to dub a single line while heavily intoxicated, which later inspired Matthew Lombardo’s play “Looped.” Interestingly, decades later in 2013, Powers would portray Bankhead herself in a stage adaptation of “Looped.” Powers celebrated her 22nd birthday on set in November 1964, receiving a cake with Bankhead and the crew. The film’s production, while challenging, became a pivotal experience for Powers, showcasing her talent and resilience in a demanding role that would later be recognized as a standout in her early career.