Paul Garston is a young, highly successful but rather arrogant and aggressive businessman, who is used to pressurising his clients. He is also having an affair with the wife of one of his draughtsmen. His confidence though is broken by a series of threatening phone calls. His partner Eric Hart urges him to bring in Frank Marker to act as a bodyguard. Garston wants to preserve his impregnable image so tells Marker to masquerade as his chauffeur.
The draughtsman Johnson starts to suspect his wife's behaviour and eventually her infidelity becomes impossible to disguise. He is determined for revenge. What is he prepared to do? Can Frank protect Garston - and from whom?
Writer: Roger Marshall Director: Kim Mills
Cast: Alfred Burke (Frank Marker); Keith Baxter (Paul Garston); Peter Barkworth (Eric Hart); June Barry (Anne Johnson); Robert Tunstall (Ray Johnson); Sheila Raynor (Mrs. Johnson); Maurice Hedley (Lionel Wheeler); Peter Williams (Tympson); Caroline Blakiston (Eva Garston); Bruce Montague (Peters); Robert Mill (Ellis); Vanessa Thornton (Paulline); Joe Ritchie (Gray); Velentino Musetti, Andy Brewer (Thugs).