The BEST episodes written by Kazuo Koike
#1 - Sleep Inside the Cage
Golgo 13 - Season 1 - Episode 9
Golgo 13 is arrested and sent to Pandora Island Prison, an isolated prison somewhere near the Alaska mainland to rescue a prisoner named Patrick Zalas despite being under the thumb of a sadistic and corrupt warden named Kickers. But after the two escape, Golgo executes him under orders of Patrick's bosses.
#2 - Melancholy Summer
Golgo 13 - Season 1 - Episode 20
Golgo is sent to Malta on a secret mission on an assignment from the British government after a Foreign and Commonwealth Office employee named Arnold Glaston went rogue and was said to have sold national secrets to Russian companies, forcing him to escape overseas by marrying a girl named Stella in Malta. The mercenary follows Stella everyday to determine Arnold's location despite being told that he had escaped to America. Even with persistence from MI:6, Golgo was able to determine that Arnold had planned to return back to Malta, which enabled the assassin to complete his mission with success.
#3 - The Midnight Sun Means Sighs of Love
Golgo 13 - Season 1 - Episode 28
A woman, whose husband cheated on her, feels she wants to die to escape the pain he caused. By chance she shares a taxi to the airport with Golgo 13 and also the seat next to his. When the plane is forced to perform a belly landing Golgo reveals to her that she does actually want to live and enjoy life. At their destination, having made love at night, she follows him to his job. Golgo can't allow a witness to the job and so kills her.
#4 - A Crossover of Murderous Intent
Golgo 13 - Season 1 - Episode 32
Jonathan Earp, a company executive hires Golgo to assassinate one of the owners of the company. The plan is already laid out with no witnesses or physical evidence, all Duke has to do is pull the trigger, while Earp controls the plane. However a disgruntled employee has switched Earp's lucky bowling ball with a bomb and Earp takes his lucky charm everywhere he goes. The assassination goes off without a hitch but the remaining owner has already worked out what Earp will do and fires him. With Golgo leaving the employee celebrates when the bomb detonates killing Earp and the other owner. Having nearly been blown up Golgo murders the employee.