The Adventures of Sherlock Holmes - The Boscombe Valley Mystery

Dr. Watson and his wife, Mary, are having breakfast when they are interrupted by a telegram. Mary, noticing his behavior upon reading it, asks "Well John, what did Mr. Holmes have to say?" Watson asks "How on earth did you know this is from Holmes?" Mary says "A telegram from a patient would have you rushing from the room at once. Why else would he wire you if he didn't want you to rush off somewhere for an investigation?" Watson reads the telegram aloud "Have you a couple of days to spare? I have just been wired for from the west of England. Will  be glad if you could come with me. Air and scenery perfect. I leave Paddington by the 11:15 train". Mary says "Well, Dr. Anstruther could stand in for you. He owes you a favor. You have been looking a little pale lately. You certainly could do with a change, or have you suddenly lost interest in Mr. Holmes and his cases?" Watson says "I should be ungrateful if I were not, seeing what I gained through one of them". Mary asks "Well?" Watson says "I'll go and pack. I have only half an hour." Later, on the train, Mr. Holmes says "It's really very good of you to come, Watson". He says "It's very good of you to ask me". Holmes says "It makes a considerable difference to me having someone I can thoroughly rely on". Watson says "Thank you. So, what's the case?" Holmes says "The Boscombe Valley Tragedy, they are calling it. It seems to be one of those simple cases that seem so extremely difficult. The more featureless and commonplace a crime is, the more difficult it is to bring it home". Watson asks "So, there are no leads?" Holmes says "On the contrary, they have established a very serious case against the son of a murdered man". Watson says "It's a murder then". Holmes says "Yes Watson, it's a murder".