Did Dentist Try to Drug His Wife Once Before?

The Colorado dentist accused of poisoning his wife with cyanide and arsenic allegedly drugged her once before. According to the victim's sister, Dr. Jim Craig slipped his wife, Angela, "an unknown drug" about six years ago. The sister also told cops the couple's marriage was "tumultuous" and he had "multiple affairs." The arrest warrant says Craig ordered "arsenic metal 99.9999% crystalline" on Amazon. Angela died in the hospital allegedly as a result of her husband poisoning her protein shakes.