Dr. Mortimer fiddled with Holmes and Watson about the case. Dr. Mortimer viewed the location at the moor and so, he can they tell lot of informations. Sherlock and Watson were impressed. Dr. Mortimer asked Holmes and Watson for help, they agreed. Mortimer tells also, that he has a date with the last "survivor", Henry, of the Baskerville family. Henry also traveled from Australia to London for his heritage.