Using Polanski Against Himself

The very young girl who was drugged and raped by Roman Polanski 35 years ago (in Jack Nicholson's house) is finally telling her story in full in a book coming out in September.  Interesting story here about the book's cover at left--which features photo of her taken just three weeks before the rape--and was taken by Polanski himself.  It reveals how young she really was (i.e. 13) which may have been ignored by many since no photos of her were widely distributed for so long (she avoided publicity). 

The roll of film was believed lost or hidden for years.  How did they get rights to use it now on cover (beyond moral claims)?   Polanski had turned over other photos at trial and gave up all rights, so that applied to this as well.