A star was popular actor Robson Green, playing the officer, DCI Cregeen, whose injuries when the shooting leave him using unknown abilities to feel crook. A serial was super popular, & led to ii sequel serials within 1998 and 1999, although these were not written by Abbott or even Davies. 1999's Testing Evil III was co-produced by using Granada by Green's possess independent production company, Coastal Productions.

Within 2004, the USA Network in the US screened an American mini-series adaptation of the first serial, by actor Bruce Willis's production company. When a U.s. adaptation garnered critical acclamation, a United states Network deemed it commercially abortive & opted to non renew a series.