Mission improbable (Filed: 09/11/2003) The BBC is searching for would-be spies to be coached by real intelligence officers for a reality TV programme to be shown next year. Adam Lusher became a trainee spook for a day.The voice on the other end of the telephone was pleasingly furtive. "Mr Lusher, do you want to become a spy?" Did I want to? Did I want to travel the world? Tropical islands with Spectre bases hidden in the volcano a speciality?Did I want to drive fast cars, catch criminal masterminds? Did I want to tangle with dangerously beautiful women? Well, you...