The working title for David Cronenberg’s Dead Ringers was “Gemini.” The studio did not like it, and the working title was updated to “Twins.” This was changed to “Dead Ringers” after Ivan Reitman, who had produced two of David Cronenberg’s early films, approached Cronenberg about purchasing the rights to use the title “Twins.” This title was then used for the Danny DeVito/Arnold Schwarzenegger film Twins (1988).
It’s hard to imagine this movie being called anything other than Dead Ringers, let alone something as plain as Twins.
Find more behind-the-scenes facts at IMDb Trivia: Dead Ringers (1988).
The Devil's Muse 