They're All Dead

When Jimmy, in a class at school, hears about some old police cases, he tells his Grandpa Mayfield, this forces Grandpa to reveal his secret past. But when Grandpa tells his story of the people and events in the case, the Chief of Police finds a possibility that people thought dead might be alive, and reopens the case. When bodies begin to appear, the case becomes a hot case, but the only clues for the police and FBI, in their race to stop an impending disaster, are Grandpa's memory of the people involved.