By J.I. Baker
August 13, 2012 12:00 PM

THE KENNEDY BROTHERS The only known photo of Monroe with Jack (right) and Bobby was taken after her breathy rendition of “Happy Birthday Mr. President” in May ’62.

SINATRA AND HIS GANG Days before her death, Monroe (with Sinatra in ’60) spent a boozy weekend at his Cal-Neva Lodge on Lake Tahoe. Fellow guest Peter Lawford may have warned her then to stop trying to reach Jack and Bobby.

THE MOBSTER Sam Giancana was rumored to have had Monroe photographed while being sexually humiliated at Cal-Neva in order to blackmail her.