Randall & Hopkirk (Deceased) S01E10 - When Did You Start to Stop Seeing Things?

Marty is confused when Jeff fails to acknowledge him and even more so when he sees Jeff kill Tully, an employee of the Towler Corporation, whose stock market leaks Jeff has been investigating. In fact it is not Jeff but an actor in a mask made to resemble him and in the pay of Laker, the Towler Corporation's general manager, out to make a killing in the market from the information supplied by the real Jeff, who will be disposed of when he has no further purpose. Laker ends up in a room with both Jeffs and about to shoot one. Fortunately Marty hypnotises Sir Oliver, a confused psychiatrist, into leaping into action and saving the real Jeff.