Well, I don't know. Who knows who the next person on the button list would be? Ok, I know you said it was someone on death row, but it reminds me of a Twilight Zone episode. Gotta watch that karma.
http://en.wikipedia.org/wiki/Button,_Button_(The_Twilight_Zone)
Arthur and Norma Lewis are slowly descending into abject poverty. One day, they receive a mysterious locked box with a button on it and a note that says Mr. Steward will come visit. Then, just as the note says, a smartly dressed stranger who introduces himself as Steward comes to their door when Arthur is out. He gives Norma the key to the box and explains that, if they press the button, two things will happen: they will receive $200,000 and someone "whom [they] don't know" will die.
They open the box and discover no mechanism inside it—it is simply an empty box with a button on it. The next day, Arthur leaves for work and sees Norma sitting at the kitchen table, her gaze transfixed on the button. At the end of the day, he returns from work and it appears that nothing has changed; Norma is still sitting and concentrating only on the button. The day goes by. Norma and Arthur keep talking about the box, when suddenly Norma decides to push the button.
The next day Mr. Steward returns, takes back the box, and gives them a briefcase with the $200,000. The Lewises are in shock and ask what will happen next. Steward ominously replies that the button will be "reprogrammed" and offered to someone else with the same terms and conditions, adding as he focuses on Norma:
"I can assure you it will be offered to someone
whom you don't know."
A horrified, knowing expression crosses Norma's face as she realizes the true nature of those chosen to die...the previous owner who pushed the button.