Discover Philadelphia in a whole new way:  by solving a murder mystery! You will be tasked with solving the murder of silent film director Rex King, who was visiting Philadelphia while filming on location in 1926.  Gather the clues - outdoors and on the move - while visiting historical sites throughout the city! Using your smart phone, you will be out and about, while finding out whodunnit.  During this game played at your own pace, you will venture to several historic sites, gathering clues along the way.  This fantastic family friendly game is great fun while checking out the sites on holiday or just getting to know your home town better.  The whole family can play – or your whole group of friends – with just one purchase. At each stop, you will search for the passcode to open up your next set of clues by reading readily accessible (and free) historical markers.  Stops on this hunt include:  Walnut Street Theatre,  The Historic Strawbridge's Building, and the Billie Holiday Residence (just to name a few).  This 2.5 mile walk will visit 10 stops of historical significance, at which point you will assemble your clues, submit your response, and find out the solution!