James Craig is accused of poisoning his wife's protein shakes nearly two years ago, allegedly ordering a rush shipment of potassium cyanide that he said he needed for a patient after police say arsenic failed to kill her.
The charging document did not say who Craig allegedly wanted to have killed but police in Aurora, Colorado, have confirmed the intended target of the alleged murder plot was a detective on the case.
Prosecutors on Friday are set to present evidence that a Colorado dentist charged with killing his wife also tried to get a fellow inmate to kill a detective investigating him.
Prosecutors are scheduled to present more details about what they believe happened during a hearing Friday afternoon in order to convince a judge that Craig should also be prosecuted for those charges during his trial.
Late last year, prosecutors filed new charges against him: solicitation to commit murder and solicitation to commit perjury.
