Ronan Ryan, a former FBI agent, returns to Eastboro for the first time in 10 years to attend the twentieth reunion of his High School class. A celebration with his basketball teammates and a pleasant encounter with a first love is interrupted by a violent act of vengeance. The Five Chimneys Restaurant where the reunion dinner is held becomes a crime scene, but the killer's work is not finished. His other targets include Ronan, Ronan's high school sweetheart and The Eastboro Chief of Police. They join with a jailed computer hacker to try and find the deranged, but clever garage dweller who mercilessly and methodically wreaks terror on the classmates of his past. The deadly class reunion at Eastboro comes to an end in forty-eight tension packed hours after the Reunion Bomber makes his final detonation.