Ep 4. Laurie and the Professor

Eric starts doubting his relationship with Donna after seeing her flirt with Randy during a school function. Meanwhile, Red becomes paranoid about the possibility of losing his job. But things take an unexpected turn when Laurie, Eric's older sister, invites her college professor over to the Forman household. Laurie's flirtatious behavior towards the professor irritates Eric but it is even more complicated when Red starts to develop feelings for the older woman. As tension builds in the household, Eric tries to figure out his own feelings about Donna and Laurie finds herself in a complicated situation with her professor. This episode explores the themes of infidelity, jealousy, and family dynamics.