In The Professor, Dr. Daniel Danfield, a crime psychology expert, finds himself in the midst of a perplexing bank robbery case. The episode opens with Danfield dictating his thoughts to his secretary, Rusty Fairfax, as he reflects on the intricate workings of the criminal mind. He is soon drawn into the investigation of a robbery that defies the usual patterns seen in such crimes. The robbers, a man named Nick and his partner Trixie Calvert, display a level of unpredictability that piques Danfield's interest.