Blue flies or anthrax are a type of fly that is characterized by blue and feeds on rotting meat and bodies. Is a kind of cemetery flies laying an egg on the bodies and hatching larvae feeding on the carcass, to get rid of the environment of those bodies and then can not turn into the full insect to restore the cycle of life on another body and there is a common saying "I will not let the blue flies know you the path of jar (your place") It is not clear what the popular proverb is and what is the relationship between blue flies and the disappearance of people, until recently the mystery of the relationship between them has emerged: Scientific research has recently revealed the strange ability enjoyed by this type of flies, it has the ability to detect murders at an extreme speed Through the supplied sensor horns, which are similar to lasers J smell the smell of the body for more than three kilometers Vaitir them and puts them through the blood of their eggs and flies analysis phases of egg-laying and old medicine men can now assess the anatomic and determine the killing.