Question: Question: Where is the idyllic island? If there is no answer, please output "Insufficient information to provide an answer.". Movie title: Evil Under the Sun Context: A hiker finds a dead woman on the Yorkshire moors; the victim, who has been strangled, is identified as Alice Ruber. Shortly afterwards, Belgian detective Hercule Poirot (Peter Ustinov) examines a diamond belonging to millionaire industrialist Sir Horace Blatt (Colin Blakely), and declares it a fake. Assured that Sir Horace gave a real diamond to his mistress and she later returned the fake to him, Poirot accompanies Sir Horace to confront her at an exclusive island resort. The hotel is the former summer palace of the reigning King of Tyrania, now owned by Daphne Castle (Maggie Smith), who had received the palace "for services rendered". Sir Horace's former mistress is actress Arlena Stuart Marshall (Diana Rigg), who is on holiday with her husband Kenneth (Denis Quilley). Arlena is emotionally abusive to her stepdaughter, Linda (Emily Hone), and flirts with handsome young Patrick Redfern (Nicholas Clay), who is himself married to the meek Christine (Jane Birkin). Patrick is on the island only because Arlena arranged it. Kenneth turns to his old friend, Daphne, who reviles the way that Arlena treats both him and Linda. Arlena has also caused financial problems for Odell and Myra Gardener (James Mason and Sylvia Miles) by walking out of a major play, and refusing another. Writer Rex Brewster (Roddy McDowall) has already spent the royalties advanced to him for a tell-all biography of Arlena. Early one morning, Arlena takes a paddle-boat to Ladder Bay. Patrick and Myra go for a boat trip around the island and see a body lying motionless on the beach. Patrick approaches the body and recognizes Arlena, announcing that she has been strangled. Poirot must determine which of his eight fellow guestsor Daphneis the murderer. Daphne had heard Kenneth in his room typing at the time of the murder, and Christine was with Linda at Gull Cove and did not leave until 11:55 for a 12:30 tennis match. Sir Horace argued with Arlena about the diamond at Ladder Bay at 11:30, which is confirmed by his yacht crew and by Daphne....
Answer:
Insufficient information to provide an answer.