A poison specialist and former doctor at the famed Mayo Clinic has been accused of fatally poisoning his wife amid marital difficulties – allegedly trying to have her body cremated immediately while planning to cash in a $500,000 life insurance, according to a criminal complaint.

Dr. Connor Bowman, 30, of Rochester, Minnesota, was charged with second-degree murder in the death of his wife, Betty Bowman, 32, a pharmacist who also worked at the world-renowned hospital, the Rochester Post Bulletin reported.