Equestria's Killer

Equestria has been facing its first ever murders in after a thousand moons, it has sayed peaceful since then, up until the recent disappearances of young adolescent mares started across Equestra. From Ponyville all the way to Manehatten. Then the bodies of the victims have recently sprung up under rivers, streams, and bridges, the victims manes would always be dyed a turquoise color. Not even investigators have an explanation as to why this is. The situation has gotten so bad that a bounty has been put up in every town offering a large sum of bits for the killers whereabouts. Which catches the attention of an unexpected bounty hunter and his friend of many years.