When "Welles" (Michael Sarazin) is caught after an audacious break in to sabotage a top secret government lab, he claims to have been so traumatised by the whole experience and explosive aftermath that he cannot remember anything about who he is, or why his was there. That deduction falls to "Tuxan" (George Peppard) who sets about trying to help his quarry "remember" just who sent him and what their objective was. On the face of it, this is just another one of these standard television conspiracy thrillers, but there is quite a degree of mystery established by an on-form Sarazin and Peppard…