Detective Benjamin Weisbach was one of the first investigators in the murder of the Liebert parents. On his last day before retirement, he escorts a convicted serial murderer named Rheinhard Dinger and questions him about why he committed the murders and Dinger dates it back to when he sheltered young twins and the boy encouraged his violent tendencies which Weisbach recognizes as the Liebert twins. At the same prison, Dr. Gillen is interviewing several murderers about why they also killed people who did not fit their usual modus operandi. They two meet and both realize that these criminals committed their atypical murders at the request of a young man who fits the description of Johan. (Source: Wikipedia)

Aired on: 7/12/2005