British Investigative journalist Matthew Smith has published the book The Men Who Murdered Marilyn in Britain.
Smith stated that Jeanne Carmen was Marilyn's “friend and neighbor” when she lived in an apartment on Doheny drive in West Hollywood.
Smith also stated that Marilyn had received a series of disturbing phone calls the night of August 3 and into the wee hours.
The caller repeatedly told Marilyn to “‘Leave Bobby alone you tramp’ or something similar”.
Marilyn called Carmen to tell her about the phone calls early the next morning.
According to Smith, “Marilyn’s early morning call to Jeanne Carmen speaks reams for their friendship”.
Source: ^ Smith, Matthew (1996). The Men Who Murdered Marilyn. Bloomsbury Publishing Plc, 23, 203-04. ISBN 0-7475-2722-9
