Developed and produced by Ranald Graham, the series was loosely based on the novels by William Leonard Marshall.

A single season of thirteen episodes was produced by Yorkshire Television and broadcast on ITV from January 13 to April 7, 1990.

[6] Four principal characters are featured in the novels; DCI Harry Feiffer, of European heritage but third generation born and brought up in the Colony, Senior Inspector Christopher O'Yee, a half-Chinese American and the ever-bickering team of Inspectors Auden and Spencer, who attempt to find the rational basis for inexplicable and seemingly bizarre crimes.

One of the most notable novels is 1988's Out of Nowhere, in which Feiffer must figure out why in the pre-dawn hours, four people in a plate-glass-filled van with Chinese opera blaring out of the tape deck were driving on the wrong side of a deserted motorway, miles from the nearest on-ramp, before dying in a violent collision with an oncoming lorry.

[7] Sixteen novels were published between 1975 and 1998: Yellowthread Street (1975), The Hatchet Man (1976), Gelignite (1976), Thin Air (1977), Skulduggery (1979), Sci-Fi (1981), Perfect End (1981), War Machine (1982), The Far Away Man (1984), Roadshow (1985), Head First (1986), Frogmouth (1987), Out of Nowhere (1988), Inches (1994), Nightmare Syndrome (1997) and To The End (1998).