Numb3rs (2005)

S2E16 Protest

Don and his team look into a bombing at an Army recruiting center, which bears striking similarities to the actions of a 1970s anti-war activist who vanished three decades ago after being implicated in a deadly blast that killed two individuals. Retired Agent Thomas Larson, who once sought answers in the case, comes back to assist but begins to doubt Don's commitment when it's uncovered that Alan had a connection to the activist and had taken part in protests alongside him, creating friction within the family.