This is an amazing collection of ( 10 )single Sherlock Holmes style cases, where you are given a main story, a newspaper for the day of the events, a map of London with so many points of interest, a London directory, assistants who can help guide your investigation, and a guide/investigation book that tells you what you find at each location you visit. There is a built in system to keep you from accidentally coming upon the correct answer, and questions in the back that help you score how well you have done your job. You see it isn’t just right or wrong, it’s also could you have done it in less steps than Holmes, and did you figure out that side mystery? Fun to play alone or with a few friends. So worth the money. I will be back for the others in the series.