Facts of the Crime:
Sentenced to death in Bucks County on April 17, 2009 for two workplace murders. He gunned down Angel Guadalupe of Falls Township, as Guadalupe backed his sport utility vehicle from the parking lot. Guadalupe, 46, a father of four, had just started the extra job two weeks earlier to help pay his mortgage. Diamond then shot and killed Reginald Woodson, 52, who had tried to intervene after hearing shots. Diamond shot Woodson in the back as he tried to run back inside the warehouse -- a moment captured on a security video that sent Woodson's family into loud wailing when it was played in court.