In this 1987 photo, Ed Graf is led away from judge's chambers by Hewitt police detective Frank Latham in Waco, Texas. Graf was given life in prison 25 years ago for killing his two step

 

              In this 1987 photo, Ed Graf is led away from judge
In this 1987 photo, Ed Graf is led away from judge's chambers by Hewitt police detective Frank Latham in Waco, Texas. Graf was given life in prison 25 years ago for killing his two stepsons by locking them in a backyard shed and setting it on fire. Two investigators used photos of the shed’s remains to persuade jurors that Graf had started the fire intentionally killing Clare Bradburn's sons. Authorities in Texas and in other states are beginning to re-examine old arson cases in which defendants may have been convicted with questionable scientific evidence. (AP Photo/Waco Tribune Herald, Steve Earley)