Colorado dentist James Craig fatally poisoned his wife in 2023 because of his growing financial troubles and his affair with another woman, prosecutors alleged in opening statements of his murder trial Tuesday.

James Craig is accused of fatally poisoning his wife of 23 years and trying to cover his tracks by asking his cellmate to kill the lead investigator. Here's what to know as his Colorado trial starts.

Dr. James Craig's murder trial features testimony from a dental office manager who received a suspicious package containing potassium cyanide shortly before his wife's death.