Plot summary
Mysterious cancer clusters are found around a number of elementary schools whose playgrounds were all paved by the same company. A new CalSci administrator ( Kathy Najimy in her first appearance as recurring character Dr. Mildred Finch) annoys Charlie and his colleagues, while Alan dates her. Joshua Malina, Bob Gunton, Deirdre Lovejoy, and Erica Gimpel also guest star. Mathematics used: Groundwater flow equation, cancer clusters, seismic tomography and Kac–Moody algebra
Credits
Adapted from Wikipedia contributors, Numbers season 3. HTML formatting and reference markers removed.