The Professionals - Season 3 - Eps 4: Dead Reckoning
A spy is extradited to Britain with an attempt to keep his arrival top-secret. However, the Bulgarians from Batak's homeland who sent him appear to be trying to make his movements as public as possible. When he is eventually murdered, CI5 suspect his music student daughter of poisoning him.
About The Professionals

Title: The Professionals
First Air Date: 1977-12-30
Last Air Date: 1983-02-06
Status: Ended
Rating: 7.4/10 (from 42 votes)
Language: EN
Seasons: 5
Total Episodes: 57
Network: ITV1
Genres: Action & Adventure, Crime, Drama
Production Companies: LWT
Synopsis
The lives of Bodie and Doyle, top agents for Britain's CI5 (Criminal Intelligence 5), and their controller, George Cowley. The mandate of CI5 was to fight terrorism and similar high-profile crimes. Cowley, a hard ex-MI5 operative, hand-picked each of his men. Bodie is a cynical ex-SAS paratrooper and mercenary whose nature ran to controlled violence, while his partner, Doyle, comes to CI5 from the regular police force, and is more of an open minded liberal. Their relationship is often contentious, but they are the top men in their field, and the ones to whom Cowley always assigned to the toughest cases.
Cast

Lewis Collins
Bodie

Martin Shaw
Doyle

Gordon Jackson
George Cowley