Thirty-four-year-old Danielle Imbo and 35-year-old Richard Petrone vanish after leaving a night club on Philadelphia’s South Street. Their families are joined in the urgent search to find the missing couple as well as Richard’s missing truck. But soon, dead-ends and desperation lead to finger pointing and blame. Investigators in New Jersey and Pennsylvania – including the F.B.I. – work together to solve the perplexing mystery with sparse clues and increased speculation. Then, just when all hope seems lost, a call comes in promising potential resolution for a family that has been haunted for years by the painful case.