Political scientist Ethan Hollander interviews a Nazi war criminal, and as a graduate student, Cather Simpson is startled when her adviser lies about their work.

Paleontologist David Evans starts to feel defeated after three days of searching fruitlessly for fossils, and when cave geologist Gabriela Marks Serrato develops fibromyalgia, exploring caves becomes a challenge.

Kate Marvel's dream of being a genius inspires her to study astrophysics at Cambridge, and when Joe Normandin begins to question his sexuality as a teenager, he turns to neuroscience for help.

Lew Lefton tries to succeed as both a math professor and a math comedian, and Vanessa Vakharia faces her first day as student teacher of a math class.