Monster - Season 1 - Eps 63: Unrelated Murders
Egon Weisbach was one of the first investigators in the murder of the Liebert parents. On his last day on the job before retirement, he is escorting a convicted serial murderer but wants to know why he killed someone who did not fit his modus operandi. At the same time, Dr. Gillen is interviewing several murderers wondering why they killed someone who also did not fit their usual targets. Both realize that all these criminals committed murders outside their usual scope at the request of a young man, presumably Johan.
About Monster

Title: Monster
First Air Date: 2004-04-07
Last Air Date: 2005-09-28
Status: Ended
Rating: 8.521/10 (from 629 votes)
Language: JA
Seasons: 2
Total Episodes: 74
Network: Nippon TV
Genres: Animation, Drama, Crime, Mystery
Production Companies: Shogakukan Production, Madhouse, VAP
Synopsis
Kenzou Tenma, a Japanese brain surgeon in Germany, finds his life in utter turmoil after getting involved with a psychopath that was once a former patient.
Cast

Hidenobu Kiuchi
Tenma (voice)