Colorado dentist James Craig - accused of poisoning wife to death - is hit with NEW charges of tampering with evidence

The brother of the Colorado mother-of-six allegedly poisoned to death by her dentist husband, James Craig, has told of the 'void' she has left in the family and spoken out against what he describes as Craig's 'monstrous deeds.'

Mark Pray, 55, was speaking exclusively to DailyMail.com as it emerged that Craig has been hit with new charges by prosecutors in Aurora who last week filed an additional felony count of solicitation to commit tampering with physical evidence.

It is just over a year since Craig, 46, was charged with first-degree murder following his wife Angela's death on March 18, 2023.

Now, prosecutors allege that, across two weeks of his time in county jail after his arrest the following day, Craig tried to persuade one of his daughters to dispose of key evidence in the case against him.

Father-of-six James Craig, 46, was charged with first-degree murder after his wife Angela's death in March 2023 

Angela and Craig are pictured with five of their six kids. Angela's brother said, 'The heinous actions of her killer have left a void in the lives of her children, our family, her countless friends'

Angela's brother Mark Pray tells DailyMail.com, 'He manipulates and exploits anyone and anything to evade accountability for his monstrous deeds'

Pray told DailyMail.com that he wanted to thank the Aurora detectives and the DA's office for their 'unwavering dedication for seeking justice' for his 'beloved sister's senseless murder'.

'The heinous actions of her killer have left a void in the lives of her children, our family, her countless friends, and the world, depriving us of Angie's love and light,' he said.

According to Pray, 'This cowardly act, driven by self-absorption, is a stark reminder of the depths of human depravity.

'The recent revelation of evidence tampering serves as damning proof not only of his guilt in orchestrating Angie's torment and demise but also of his utter disregard for the well-being of those around him, including his own children.'

Craig was arrested for murder after detectives discovered his wife Angela Craig, 43, had been fatally poisoned

Pray continued, 'He manipulates and exploits anyone and anything to evade accountability for his monstrous deeds. However, his reckoning is inevitable. Whether in this life or the next, justice will prevail, and he will face the consequences of his actions.'

It was Pray who accompanied his sister to hospital on the morning of March 15, concerned by the severe headaches and dizziness she was experiencing.

Within two hours of her admission to University Hospital that day she suffered a devastating seizure and began a rapid decline for which medical staff could find no cause.

Ultimately, with Angela on life-support, intubated and in the Intensive Care Unit medics told the family to prepare for the worst.

She was pronounced brain dead three days later, on March 18, 2023. She was 43 years old.

In the days following her death a deeply disturbing picture emerged of the life lived by the devoted wife of 23 years and mother who committed herself to her marriage despite doubts and despite her husband's numerous infidelities, self-confessed porn addiction and a worrisome gambling habit that ran alongside him, 'running his company into the ground.'

DailyMail.com exclusively revealed that Craig's latest mistress was orthodontist Karin Cain, 50, from Marble Falls, Texas. She flew to be by his side as his wife lay dying in hospital but has since claimed she knew nothing of Craig's supposed plan to start a new life with her.

Meanwhile the 52-page probable cause document filed in Arapahoe District Court detailed the allegedly calculated and 'heinous' plot which saw Craig research and purchase poisons online then deliver then to his unsuspecting wife through potassium cyanide laced protein shakes.

Angela Craig was taken to the hospital on March 15. She died on March 19, after four days on life support 

Text messages exchanged between the couple show Craig apparently feigning concern for his wife – even as she lay hospitalized, frightened, and dying – who was suffering through the symptoms of the poison he himself gave her 

James and Angela Craig pose for a family picture with their six children aged eight to 20

Text messages exchanged between the couple show Craig apparently feigning concern for his wife – even as she lay hospitalized, frightened, and dying – who was suffering through the symptoms of the poison he himself gave her.

While Angela deteriorated in the hospital Craig flew his mistress from Texas, rushing from his wife's hospital bedside to her while telling Angela how much he 'wished he could stay longer.'

DailyMail.com revealed Craig was having an affair with orthodontist Karin Cain, 49, who is currently in the middle of a divorce from her husband Jason

It is a reality shocked all those who though they knew Craig and who had bought into the carefully curated image of a picture-perfect family that he presented.

Living in an upscale development with parks, a nature reserve, and playgrounds the Craigs were a family who seemed to have it all.

But the probable cause affidavit states that, behind closed doors, Craig drugged Angela five or six years ago, in an incident he attempted to explain away by claiming he intended to commit suicide and didn't want her to stop him.

Meanwhile his wife was struggling to stay in a marriage riven by his repeated affairs, dire financial problems, and addictions.

Chelsea Norton, 35, who worked for Craig at his Summberbrook Dental Practice, where Angela also worked, told DailyMail.com, 'We're all just in shock. He was a very good guy, like the least likely person for any of this.

'They were the nicest, sweetest family, with such cute kids. I've looked back on my memories to see if there's anything I missed that hinted at anything [that would explain this] at all. But there's nothing.

'He would give motivational speeches and do food for the staff some afternoons.'

Craig allegedly first gave his wife the poison on March 6, in a shake he mixed before their workout

Craig had arsenic delivered to the family's home in Aurora, Colorado, days before he poisoned her  

Yet according to the charging documents it was in this office – in a darkened exam room – that Craig researched and purchased poison online. And to this address that he had a package containing potassium cyanide delivered March 13.

An earlier delivery of arsenic was found to have been made to his home on March 4.

The later delivery raised concerns when a staff member who had not got the message to not open what Craig described as a 'personal package,' opened it and could think of no medical reason for the purchase.

She googled the chemical, labelled a biohazard, and realized how closely the symptoms of cyanide poisoning mirrored those being suffered by Angela.

It was Craig's business partner who reported the concerns to a nurse at University Hospital. The nurse in turn informed law enforcement setting in motion the investigation that led to Craig's arrest and charging.

Craig's trial is expected to take place in August.