Part of the fun of watching detective shows is trying to figure out what happened based upon the clues that are revealed.

How much can you infer from these four images? 

1.While shopping for Christmas presents at a local bookstore, I took an interest in this blue masking tape on the carpet. 

It started near the front of the store, and took several turns, it was perhaps 130 feet in total.

What is up with the blue tape?