The XYY Man is a 1976–77 British crime thriller television series created by Kenneth Royce, based on his novel series about reformed cat burglar William 'Spider' Scott, recruited by British intelligence for secret missions due to his unique genetic makeup (an extra Y chromosome), which supposedly predisposes him to crime. The plot follows his reluctant work for the secret service and his constant pursuit by the dogged Detective Sergeant George Bulman, leading to spin-offs like Strangers and Bulman.
The XYY Man (Season 1)
The Proposition (Episode 1)
Writer: Ivor Marshall
Air date: 1976-07-03
Runtime: 60 min
Overview: Cat burglar William 'Spider' Scott leaves prison vowing to go straight. However, a government security officer approaches him to do a highly dangerous job, and is hounded by Detective Superintendent George Bulman.
The Execution (Episode 2)
Writer: Ivor Marshall
Air date: 1976-07-10
Runtime: 60 min
Overview: Fairfax persuades Spider to burgle the Chinese Legation to retrieve a photo for the British Government. He accomplishes this but is seen and chased by Bulman.
The Resolution (Episode 3)
Writer: Ivor Marshall
Air date: 1976-07-17
Runtime: 60 min
Overview: Spider is tortured by two South African hitmen for the negative he stole from the Chinese. He's luckily rescued and then discovers he may be in even worse danger than he thought.

Seasons
Episodes 3
Episodes 10