It has unleashed a monster on the Town of Fleetwood in 1993. The question is: Who is the monster? Is it the man who looks like a beast? Is it the man whose soul is that of a beast, or is it the Nazi doctor who is trying to kill the both of them?

Dr. Karl Mueller killed thousands of Jews in the German concentration camps. Now, he wants to kill two more. He views the Lachman twins, Jacob and Esau, as an affront against nature that he must destroy. They are the product of one of Mueller’s experiments. Mueller has tracked them to Fleetwood, but they know is after them.

Meanwhile, Nazi hunter Daniel Levitt is closing in on the doctor. Daniel has also discovered the secret the Mueller and Jacob and Esau’s mother, Eva, is trying to hide. It is a secret that has gotten people killed and threatens to kill more.

The Sins of the Father is the fourth episode in the monthly serial story, Beast, that began with The Past Present.