, prosecutors released photos and audio used in the murder trial of Harold Henthorn, 59


These pictures show the last minutes of Dr Toni Henthorn's life, before her husband Harold pushed her off a 130-foot cliff during a hike to celebrate their twelfth wedding anniversary.

Prosecutors released the pictures on Thursday, a month after a jury found Harold guilty of first-degree murder in the September 2012 death of his wife.

The newly released evidence file also contains Harold's calls to 911, which some jurors said sounded too cool for a man trying to save his wife's life.

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This is one of the last pictures taken of Toni Henthorn, left, before she was pushed off a cliff to her death by her husband Harold, right, in September 2012

Dr Toni Henthorn died in September 2012, after her husband took her for a hike up Deer Mountain in Colorado to celebrate their 12th wedding anniversary

Last month, Harold Henthorn was found guilty of murdering his wife on the hike and on Thursday, prosecutors released photos used to convict the 59 year old. The photo on the right was especially suspicious considering investigators were never able to find the pair of binoculars at the scene

Henthorn, 59, always maintained that his 50-year-old wife's death was an accident. He told authorities that he surprised his wife with the hike up Deer Mountain, and that she died falling over a ledge after stopping to take a picture of the view.

However, prosecutors argued that Henthorn carefully planned his wife's killing in order to cash a $4.7million life insurance policy, and scouted the location of the hike nine times before the September fall.

In the 911 calls released Thursday, Henthorn asks for a helicopter to be sent up to rescue his wife, and even offers to pay for it, but the dispatcher says it's too dangerous and that the search and rescue teams will have to climb the mountain on foot.

Harold Henthorn has maintained that his wife's death was an accident that happened when she fell off a 130-foot ledge while stopping to take a picture. Above, the location where Toni Henthorn died

Henthorn's 911 calls to police after his wife's fall were also considered suspicious by jurors. Above, search and rescue teams at the sight Toni's murder

'It is going to take at least an hour to come up that trail,' Henthorn said. 'I will pay any and all expenses for a helicopter. ... if you drop a paramedic down here.'

Harold and Toni Henthorn pictured above in a family photo

While the content of Henthorn's speech sounds caring, it is the clear and almost slow tone of his voice that had some jurors suspicious.

'The 911 call… there was so much inconsistency on the call,' juror Jerry Taboada told CBS Denver.

'It didn’t add up, it was cold and it was calculated, there was no feeling behind those calls at all. He wanted her to die.'

In the almost 20 minutes of audio, emergency dispatchers routinely check in on the man who relays his wife's deteriorating condition.

Paramedics helped coach Henthorn through the process of administering CPR to his wife, but jurors say it didn't really sound like he was trying.

'When he was with the operator who was giving him instructions on how to perform CPR. It was clear that he was not following instructions,' said juror Marxy Miller-Zahn.

Among the other suspicious pieces of evidence released this week were pictures taken on that hike.

In the photos, the Henthorns look like any other happy couple.

But there's a detail in one of the photos that also pushed jurors to issue a conviction.

That photo involves Toni Henthorn admiring the view with a pair of binoculars that were never found at the scene.

Also unsettling was the fact that Henthorn's first wife, Lynn, died in an 'accident' as well in 1995.

Lynn Henthorn was killed while changing a tire on their SUV and the car suddenly fell on her.

Prosecutors in the latest case claim that this was no accident and that Henthorn purposefully kicked the vehicle to dislodge the jacks, causing the SUV to crush Lynn.

Photos from the scene of Lynn's death were also released on Thursday.

While the Douglas County Sheriff's Office ruled the death an accident at the time, they have since reopened it in light of the death of Henthorn's second wife.

Henthorn was convicted last a month, and faces a mandatory life in prison sentence at his official sentencing hearing in Deember. He has said he plans to appeal.

Also released on Thursday were pictures taken from the scene of the death of Henthorn's first wife Lynn

Lynn also died under suspicious circumstances in 1995, when an SUV fell on top of her while changing a tire