On December 28, 2000, 19-year-old Calvin Helton was one of seven people killed in a mass shooting at a rowhouse on Lex Street in West Philadelphia that became known as the Lex Street massacre. Masked gunmen entered the house, forced ten people to lie face down and then opened fire; victims ranged in age from 15 to 54. Helton had reportedly wanted to become a Navy SEAL.

The investigation suffered early setbacks when authorities blamed a drug-turf war and four men were arrested; those men were later exonerated after spending 18 months in jail when their confessions and eyewitness identifications were shown to be coerced or flawed. The city later paid a $1.9 million settlement to the wrongly accused.

Investigators eventually linked the attack to a dispute over a car with a broken clutch and identified four suspects: Dawud and Khalid Faruqi, Shihean Black, and Bruce Veney. Bruce Veney pleaded guilty to seven counts of third-degree murder, testified against the others, and received 15 to 30 years; Shihean Black pleaded guilty to seven counts of first-degree murder and received seven consecutive life terms; Dawud and Khalid Faruqi were convicted on seven counts of first-degree murder and sentenced to seven consecutive life terms.

Did anyone who knew Calvin or was in that neighborhood that night come forward with details that helped the case?