The U.S.Supreme Court indicated Tuesday that it will not intervene in the case of Troy Anthony Davis.  Davis, who is now 40 years old, has been on death row for 19 years in connection with the killing of Savannah police officer Mark MacPhail in 1989.  MacPhail's was 27 years old at the time of his murder.

Davis was less than two hours away from execution last month when he was granted a stay. The High Court's decision on Tuesday morning now clears the way for another execution date to be set for Davis.

"I am totally and utterly in shock and disgusted," says Martina Correia, Troy Davis' sister.

Correia has been fighting to save her brother's life for almost 2 decades and hoped the High Court would be an answer. "I got a call about the decision and within two minutes, I got a phone call from Troy," Correia tells me. "And he had no idea he was just calling us after his morning prayer and he asked me what was wrong and I told him the Supreme Court rejected him."

Correia says despite the blow from Tuesday's decision, the family still won't give up.  "All I know is that we have to take the decision and we have to keep fighting," she tells me.  "I'm not easily discouraged and I know the Supreme Court has ruled against other people and the parole boards have ruled and then a couple days or even hours before, something has popped up and it's prevented the person from being executed."

Correria shows me pictures taken recently of her and Troy when she visited him in prison.  He is smiling.  "He always does when we see him," she says. "but today, after this news, this will the third time he's facing execution and of course as faithful as you are, it has to be wearing on his mind."

In the pile of pictures, there's also one of Troy and his mother, Virginia Davis.  She tells me that her son turned 40 on October 9th.  "Another birthday spent behind bars," she says. "I just have to believe that his next birthday will be spent at home."

"We've got to live for Troy we got to fight for Troy, you know can't fight for himself, so we've got to be here on the outside fighting along with his lawyers for him," says Mrs. Davis.

Correia shows me some T-shirts she says people from across the country and overseas are ordering. The shirts list what Correia says are the problems with the case - a lack of physical evidence and seven out of nine witnesses recanting. "So this case actually speaks for itself," she tells me.  "And it also speaks volumes about what some people are will to do to hide the truth."

Across the country in Texas, Joan MacPhail, the widow of the slain police officer, is waiting for our call.  She has agreed to talk about the case one more time.  It seems tro an onlooker that she has been waiting for closure most of her life. "I have no doubt in my mind that we have the right person," MacPhail tells me.

Joan MacPhail says she understands that the Davis family has pain and that they're relying on their faith for an answer.  "Of course we all want our prayers to be answered," she says.  "I have been relying on my faith for a long time, too."

"Like I've always said it is a process that we have to go through, unfortunately," she tells me.  "My take is I still have faith in the criminal justice system and our court system, faith that they will take care of what is right and what is wrong." 

MacPhail says she continues to believe that justice is going to be served. "If we have to be patient with it, we will be patient with it, my faith has taken us through this thus far. And so there is no doubt in my mind and I just have to stand by that, and that every court they try to appeal to will see the truth."

MacPhail says her husband was so young when he was killed, a young man who lost the opportunity to live his life and spend it with his wife and two children.

Two families that still can't agree on the facts of this case, two families that now appear to be moving closer to an end.

Yet for Martina Correia, it isn't over yet.  "I'm just praying for intervention and we're just going to have to keep fighting," she tells me. "The lawyers are going to keep doing their legal stuff and we're going to keep doing our grass roots activism."