In each episode the Ghost Squad would investigate cases that fell outside the scope of normal police work.

[1] Despite the show and characters being fictional, an actual division did exist within the Metropolitan Police at the time.

[2] Inspiration for the series was taken from a book of the same title written by John Gosling, a retired police officer and former member of the real-life squad it is based on.

[2] This squad operated only in London, but the members of the fictional team travel all over Europe, sometimes to fictitious countries.

Another common ITC trait was to feature an American actor, in this case Michael Quinn, in a leading role, in the hope of increasing the chances of international sales.