Dr. Alan Deaton is a warlock and a veterinarian, running the animal clinic in Beacon Falls. He was the advisor to the Hale family of Werewolves prior to the fire. He holds extensive knowledge concerning the supernatural and the mysteries of Beacon Falls.
Deaton was a good friend and advisor to Talia Hale, the Alpha of the Hale family. When a fire destroyed her home, a pregnant and injured Talia asked Deaton for help. After giving birth to her son, Talia asked Deaton to protect him from the hunters by suppressing his supernatural nature. Deaton agreed and took the child as she died.
Deaton used his magic to cover up what had happened, instead creating a story in which the child was saved from the womb after his mother died in a car crash. He was then adopted by the Whitmore family and given the name Jackson.