>>41313450
https://en.wikipedia.org/wiki/First_Love,_Last_Rites
>"Solid Geometry" takes a narrator who shuns his wife, Maisie (who seems desperate to elicit some affection from him) in favour of reading his great-grandfather's eventful diary. Ryan sees the diary as a 'symbol of patriarchal heritage," and it is fitting that it should provide the means for the protagonist to dispose of his wife once and for all. He reads a section in which his great-grandfather sees a scientist contort his body in a way that makes him disappear inside himself, and applies this to his wife. The murder is disturbingly clean, just as is the case with many of McEwan's atrocities, "As I drew her arms and legs through, Maisie appeared to turn in on herself like a sock.... all that remained was the echo of her question above the deep-blue sheets."

https://en.wikipedia.org/wiki/Solid_Geometry_(film)
>Phil (McGregor) is a successful advertising executive and Maisie (Millar) is his young and hedonistic wife, but their lives are thrown into turmoil when Phil inherits his great-great grandfather's secret diaries. He becomes obsessed with research into solid geometry contained in the diaries and is fascinated by the theory of "a plane without a surface." His pursuit of this mythical geometric concept tears his marriage apart.