(CNN)  -- There was a time that Pamela Hobbs believed justice had been served for her young son's murder. But 16 years after the mutilations and killings of three 8-year-old Cub Scouts, including her son, she has more doubts than ever. Tear-stricken and angry, Pamela Hobbs sat through the original trial of the three accused teens -- Damien Echols, 18; Jessie Misskelley Jr., 17, and Jason Baldwin, 16. They were convicted of murdering her son, Stevie Branch, and two other neighborhood boys, Michael Moore and Christopher Byers. The second-graders' bodies were found bruised and mutilated in a West Memphis, Arkansas, ditch; their arms and legs were bound by shoe laces.
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New eyewitness statements emerge in West Memphis 3 case
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Case centers on 1993 mutilations and murders of three 8-year-old Cub Scouts
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"Time heals all wounds and you start looking at things differently," one mom says
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DNA tests in 2007 revealed no physical evidence linking the convicted killers to crime scene
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