“Frank & Marilyn: The Lives, the Loves and the Fascinating Relationship of Frank Sinatra and Marilyn Monroe” by Edward Z. Epstein; Post Hill Press (304 pages, $30) ——— They were strangers in the night. Even as they went from exchanging glances to embracing dances, something warned them do-be-do-be-don’t. “Frank & Marilyn: The Lives, the Loves and the Fascinating Relationship of Frank Sinatra and Marilyn Monroe” by Edward Z. Epstein uncovers details about a secret, nearly decade-long relationship between them. When Sinatra and Monroe first crossed paths in 1953, she had just shot to stardom wit...