A classic book by Dashiell Hammett, the story is about a detective and takes place in the 1920’s during the time of probation. I updated the book for iPad, giving the reader 2 ways of reading the story. The first way is to read the book straight through with different locations highlighting on the New York City Map as the book progresses. The second way is to read the book with all the locations highlighted and clickable on the map. The reader can read the book out of order and try and solve the mystery before Nick and Nora have a chance to.