This is a play from the series "Armchair Theatre." Titled "A Magnum For Schneider," we are introduced to a character of David Callan. He is a British secret operative who works for a particular department for British Intelligence, simply called "The Section." To the outside world, he's known as David Tucker. At the beginning of the play, he is given the chance of redeeming himself after his boss - codename "Hunter" - had to let Callan go. Callan is someone who specialises in committing murder, both with a gun and with his fists. These assignments are determined in accordance with a colour coding filing system. It is those files that are coded red that Callan is given. The person in a red file is marked for death and that is where Callan comes in. The trouble is, is that the agent doesn't really enjoy his job as he is always questioning his orders. His masters on the top floor do not particularly care for this, hence the reason Callan was removed from the section. Hunter presents the said opportunity for Callan to prove he is still a worthy and dangerous operative. However, Hunter needs to be sure that the agent isn't suffering from battle fatigue. Callan accepts the job as he loathes the current job he holds - an ordinary office clerk in the same building as the section. Edward Woodward and Ronald Radd make the script crackle with tension in the scenes they have. Callan's contempt for Hunter and for the job, sets the tone for the rest of the play. Peter Bowles is a very good Toby Meres but Anthony Valentine made the same character his own during the regular series. Russell Hunter is excellent as the safecracker Lonely, who it turns out, is the only person Callan can call a friend. There is a bit of a twist to the tale which I won't reveal but this is vintage dramatic television. "Callan" is still the best Spy drama series of all time.