Is it possible for a race of man-eating shape shifters to live in secret on earth unnoticed by humans?

This is for a story I'm working on. These creatures are what the Native American myth of the Wendigo originated from. Their origins are a mystery, but they need to feed on human flesh at least once a month to survive. They are indistinguishable from humans except during feeding or hunting when they essentially transform their bones and muscles at will to grow structures like claws and fangs for tearing flesh, spider-leg-like appendages for climbing and pinning down prey, etc. They originated in North America and over the centuries began to live among humans. Some still hunt humans while some have learned to process dead humans to provide sustenance without risking hunting humans in large cities.
My question is, in the scenario where these creatures live in groups inside large human population centers and develop networks of front businesses to facilitate obtaining and processing human corpses, can they realistically keep their existence a secret from the general public?

posted almost 5 years ago

Enesi Majebi‭

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