I started playing PQ 4 and I have a problem. After talking to Mrs. Garcia about her dead son, I read the memo about Hickman's funeral and I go to his house, where (according to the walktrough) I should speak to his wife then automatically go to the bar. Instead, I arrive at Hickman's house, I knock, but I receicve a message, saying nobody's home at this time. What should I do?