Mary Cybulski, the top-notch script supervisor who helped keep things coherent on such complicated films as Eternal Sunshine of the Spotless Mind and Synecdoche, New York, has died. She was 70.

Mary Cybulski, a veteran script supervisor who worked on Ang Lee’s Life of Pi and The Ice Storm and many other films and also served as a set photographer for several top directors, died November 8 of ...