The Wolf in Sheep's Clothing
Aesop Fables

A certain Wolf could not get enough to eat because of the watchfulness of the Shepherds.

But one night he found a sheep skin that had been cast aside and forgotten.

The next day, dressed in the skin, the Wolf strolled into the pasture with the Sheep.

Soon a little Lamb was following him about and was quickly led away to slaughter.

That evening the Wolf entered the fold with the flock.

But it happened that the Shepherd took a fancy for mutton broth that very evening, and, picking up a knife, went to the fold.

There the first he laid hands on and killed was the Wolf.

The evil doer often comes to harm through his own deceit.