In a shocking turn of events, a Colorado dentist, James Craig, is set to enter a plea in court on Tuesday for the first-degree murder charge of his wife, Angela Craig. The case has garnered significant attention due to the disturbing details and evidence surrounding her death.

According to police reports, James Craig, who had been engaged in an extramarital affair before his wife's passing on March 18, was found to have searched online for information on poisoning and murder methods. Questions such as "is arsenic detectable in an autopsy?" and "how to make murder look like a heart attack?" were discovered in his search history. District Attorney John Kellner revealed during a preliminary hearing in July that Angela Craig had also searched her symptoms, including vertigo, shaking, and cold lips, leading up to her demise.

The cause of Angela Craig's death was determined to be poisoning from cyanide and tetrahydrozoline, a substance commonly found in over-the-counter eye drops, according to Arapahoe County coroner Kelly Lear. This revelation shocked the court and further solidified the prosecution's case against James Craig. However, the defense attorneys argued that there was no direct evidence linking Craig to the poisoning and accused the lead detective of bias against their client.

The investigation revealed that James Craig had allegedly attempted to poison his wife earlier on March 6 with arsenic, which she miraculously survived. Subsequently, he ordered a rush shipment of potassium cyanide, claiming it was required for a surgery. The suspicion surrounding Craig's actions began when his dental practice partner mentioned to a nurse that Craig had ordered potassium cyanide, despite it not being necessary for their work.

Adding another layer of intrigue to the case, it was uncovered that James Craig had been seeing another woman while his wife was undergoing treatment in the hospital. However, the woman denied willingly engaging in a relationship with a married man during an interview with ABC's GMA. Angela Craig's sister, Toni Kofoed, informed the police that her brother-in-law had drugged his wife with an unknown substance around five years ago, stating that he planned to take his own life and did not want her to save him. Kofoed believed that this incident was referenced in a series of text messages between Angela and James Craig discussing her symptoms after falling ill on March 6.

Despite the strong evidence against him, James Craig's defense attorneys argued that he had been conducting online searches for ways to kill himself due to his previous suicide attempt. However, this defense was met with skepticism from the prosecution and the court.

James Craig's background as an associate professor at the University of Missouri School of Dentistry for three years and his extensive experience in dentistry in the Aurora area since 2006 came to light during the investigation. This revelation shocked neighbors and colleagues alike, who described their disbelief and expressed sympathy for the couple's six children who now face the heart-wrenching loss of both parents.

As James Craig prepares to enter his plea in court, the case continues to captivate the public with its bewildering details and tragic consequences. The justice system will now determine the fate of a man accused of poisoning his wife, leaving behind a shattered family and a community in shock.