Sherlock Inspiration for storyline

I've been researching different  types of detective series/movies. The one that caught me the most is Sherlock, the BBC series. There was this specific scene where he was solving a murder, there was a dead man lying down on the ground with a wound at the back of his head. First what he would do is that he would look at the surrounding area for clues to determine exactly what and how it happened. Now this is the interesting part:-

The scene above, sherlock was in his "mind palace". Mind palace is when Sherlock is deep in his thoughts. Now back to the scene above, Sherlock was solving the murder in his mind palace with all the clues and information that he have gathered and they were connected. Basically it is almost the same concept with my idea for this Augmented Reality game. A clue which leads to another clue to solve the puzzle. The clues that i'm giving out is in a video form, the user can view it and in the video there are hints on where the next clue is. All i need now is to write a really good storyline for this project and so can start with it.