GRAND JUNCTION, Colo. (KJCT) - A Colorado dentist suspected of poisoning his wife of 23 years is now facing new charges. Police in Aurora say James Craig is accused of plotting to kill a detective who investigated his case while behind bars. Now he faces two additional charges of:

A dentist accused of killing his wife by poisoning her protein shakes has been charged with trying to get a fellow jail inmate to kill a detective investigating the murder case. Prosecutors filed two new charges against James Craig last week — solicitation to commit murder as well as solicitation to commit perjury.

A Colorado dentist accused of killing his wife by poisoning her protein shakes has been charged with trying to get a fellow inmate in prison to kill a detective investigating the murder case.

Colorado dentist James Craig, whose attorney withdrew just one day before his trial, was previously accused of attempting to plant evidence to fabricate a suicide scenario for his wife and of hiring women to falsely claim they had affairs with him.

James Craig has already been charged with the murder of his wife, after he allegedly poisoned her protein shake.

James Craig, the Colorado dentist imprisoned for allegedly killing his wife by poisoning her, has been hit with two new charges while in prison. They stem from trying to get a fellow inmate to kill a detective investigating his case.