A terrible school shooting has the entire sleepy town of Ames in an uproar. Who would do such a thing, and why can't the witnesses remember any details about the shooter? When Summer has a visit from a ghost she's left wondering if the dead woman could have done it. Could someone long dead actually heft an assault rifle? Along with the furor over the murders, Summer is falling for Jerry again, despite his obvious deranged state of mind. Add to that the upcoming wedding between Sam and Agnes, and include a smattering of ghosts and possible psychopaths to the guest list, and you have a recipe for disaster.