A Dream of Kings was not only Inger's last major motion picture, it is also noteworthy for her semi-nude love scene with co-star Anthony Quinn. Perhaps typecast to a degree after her protrayal of "wholesome Holstrum" in The Farmer's Daughter, Inger's roles in A Guide for the Married Man (in the opening scene where she removes her leotard in front of Walter Matthau) and in House of Cards (the railroad car scene in her lingerie) went a long way to re-establish her ability to play alluring, sexy, femme fatale lead roles. Onscreen nudity was becoming more commonplace, accepted, and explicit by the end of the decade. By today's standards, her scene with Quinn would be considered as less than de rigeur and unexceptional, but at that time (1968-69) it was thought provocative enough to make it into Playboy Magazine's Sex in the Cinema review for the year. Inger was certainly not prudish by any means, and she saw nudity onscreen as simply intrinsic to the plot or character if it was artistically necessary.
Given her history with Quinn in the past (rumors of an affair during the time of The Buccaneer), Inger's friend Katy Theodore asked about her comfort level filming with Quinn again, especially a love scene; certainly it would be understandable if she felt somewhat awkward. Inger reportedly laughed and replied, "Oh, he's out of my life. Once a romance is dead, it's completely dead to me." With that mindset, Inger turned in a performance that many saw as an artistic breakthrough: it allowed her to showcase her dramatic range in a role much different from what audiences had become accustomed to seeing from her. It gave the audience and her fans a glimpse of the talent within: from subdued to passionate, Inger's portrayal of Anna the widow/baker gives the film sensuality and eroticism, and it might be Inger's most critically acclaimed role as an actress.