Complete story — includes the ending
A pedestrian is killed when a homemade bomb explodes under a car outside of a downtown Army recruiting center. The investigation reveals that a similar bombing that killed two people at a Vietnam War-era ROTC office occurred exactly 35 years earlier, and the retired agent ( Robert Forster ) that investigated the first bombing becomes part of the current inquiry. Things take a turn when Don discovers that his father was a member of an anti-war group believed to have been associated with the bombings. Other guest stars include Concetta Tomei and Patrick J. Adams. Mathematics used: Graph theory, Ramsey numbers and recursive sequence
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Numbers season 2. HTML formatting and reference markers removed. · Content license