On Stranger Tides his inspiration for the ambience of the series, while his true inspiration was "On Stranger Tides". In 2007, after the successful opening weekend of the third "Pirates of the Caribbean" film, "", Walt Disney Studios Chairman Dick Cook said he was interested in a fourth film. The Los Angeles Times also reported that Bruckheimer already had rights to a book that could end up as another installment, though had not confirmed what book it was. On September 11, 2009, Walt Disney Pictures announced that the fourth installment would be titled "". The announcement had fueled speculation that the film would
Pirates of the Caribbean: On Stranger Tides explained Cook was one of the few who accepted his portrayal of Jack Sparrow: "When things went a little sideways on the and others at the studio were less than enthusiastic about my interpretation of the character, Dick was there from the first moment. He trusted me". During production of "" and "At World's End", writers Ted Elliott and Terry Rossio discovered Tim Powers' 1987 novel "On Stranger Tides", which they considered a good foundation on which to base "a new chapter" in the "Pirates" series. Disney bought the rights to the novel in April 2007. Rossio stated that he