Screen. She was featured as a celebrity centerfold pin-up, and made the cover three times in the space of eighteen months. Frederick was also listed in several press and editorial publications as one of photographer Terry Fincher's muses. By this point in her career, Frederick was earning over £4,000 (£ today) per week for her film work alone. She was also being represented by A-list Hollywood agent, Dennis Selinger, who represented internationally successful British actors such as Vanessa Redgrave, Michael Caine, and Sean Connery. Selinger was gradually preparing Frederick for worldwide crossover stardom in more prolific and mainstream film and television productions, as he had previously done with Susan George. In addition, Frederick had now reached the point where she no longer had to audition for roles, and was being sent stacks of scripts and lucrative film offers. 1978–1980: career decline and blacklisting Following her marriage to Peter Sellers in 1977, Frederick's career stalled for over a year as Sellers forced her to turn down all the acting offers she was receiving, in order to tend him through poor health. This included supporting and looking after him on the sets of his films. She attempted to make a career comeback in 1978, but the year-long absence had cost Frederick her burgeoning stardom. Frederick campaigned and auditioned for several films. The role that she most desired, and spent a great deal of time lobbying for, was the leading role of Meggie Cleary in The Thorn Birds. Despite her lengthy and accomplished acting résumé, the producers decided they wanted a much bigger catch, Rachel Ward. Other roles she campaigned for included Cosette in the 1978 television adaptation of Les Misérables (1978), and Anne Sullivan in the television remake of The Miracle Worker (1979), neither of which she received. She made her final onscreen appearance with her husband, Sellers, in the 1979 remake of The Prisoner of Zenda, which was a box-office and critical flop. Her final credit was as an executive producer on Sellers's last film The Fiendish Plot of Dr. Fu Manchu (1980). Following Sellers's death, his controversial will, the ongoing feuds with her stepchildren, and her short marriage to David Frost, Frederick became a figure of hate and ridicule in the press and other media. The Daily Mirror even featured her in a smear campaign list of disgraced public figures of 1980. Labelled as a “gold digger” and "professional wife",