With few pictures on the schedule , Skouras wanted to rush Zanuck 's big-budget war epic '' The Longest Day '' ( 1962 ) , a highly accurate account of the Allied invasion of Normandy on June 6 , 1944 , with a huge international cast , into release as another source of quick cash . This offended Zanuck , still Fox 's largest shareholder , for whom '' The Longest Day '' was a labor of love that he had dearly wanted to produce for many years . After it became clear that '' Something 's Got to Give '' would not be able to progress without Monroe in the lead ( Martin had refused to work with anyone else ) , Skouras finally decided that re-signing her was unavoidable . But days before filming was due to resume , she was found dead at her Los Angeles home and the picture resumed filming as '' Move Over , Darling '' , with Doris Day and James Garner in the leads . Released in 1963 , the film was a hit . The unfinished scenes from '' Something 's Got to Give '' were shelved for nearly 40 years . Rather than being rushed into release as if it were a B-picture , '' The Longest Day '' was lovingly and carefully produced under Zanuck 's supervision . It was finally released at a length of three hours , and was well received
she was found dead
Death of Marilyn Monroe
20th Century Fox