You Only Live Twice is the eleventh novel (and twelfth book) in Ian Fleming's James Bond series of stories. It was first published by Jonathan Cape in the United Kingdom on 26 March 1964 and sold out quickly. The book holds the distinction of being the last novel by Fleming to be published in his lifetime, with subsequent works being published posthumously. You Only Live Twice is the concluding chapter in what is known as the "Blofeld Trilogy".