According to Graeme Clark at the Spinning Image website, "this was the film that Pierce Brosnan elected to do after losing out on the James Bond role [in The Living Daylights (1987)]". Timothy Dalton was originally unavailable to play Bond, and Pierce Brosnan was then chosen to play 007 in 1986 and was given the script to The Living Daylights (1987). Although he was contracted to Remington Steele (1982) for seven seasons, NBC decided to cancel the show at the end of the fourth season, which meant that Brosnan was free to play James Bond in The Living Daylights (1987) the following year. However, shortly after the end of the fourth season, NBC had second thoughts about canceling Remington Steele (1982) and subsequently approached the Bond producers directly, in an attempt to strike a deal that would allow Brosnan to play both James Bond and Remington Steele the following year. NBC also offered to completely reschedule the shooting of Remington Steele to ensure that there were no scheduling conflicts. But eventually, Albert R. Broccoli famously told NBC that "James Bond will not be Remington Steele and Remington Steele will not be James Bond." Accordingly, Brosnan would only play Bond if the show remained canceled. NBC had a 60 day deadline to revoke their decision to cancel Remington Steele (1982) series and at 6.30pm on the 60th day of the deadline, Brosnan learned that NBC decided to make a fifth season. The Bond producers subsequently prevented Brosnan from becoming the next James Bond. Subsequently, the role went to Timothy Dalton, who was now finally available. NBC went on to make only six episodes of the fifth season of Remington Steele before finally canceling the show for good. Taffin (1988) started filming in August 1987 about six months after principal photography had wrapped on The Living Daylights (1987) in February 1987.
For its Australian theatrical run, the film was marketed as an action-heavy thriller. The trailer showed all the action scenes and the 1-sheet and daybill had Brosnan brandishing a shotgun with a giant explosion behind him.
Reportedly, source novelist Lyndon Mallet objected to the casting of Pierce Brosnan as Taffin. Wikipedia reports that "this was due to the actual nature of the character in the book. In the book, Mark Taffin was never a handsome man; he was decidedly overweight and very unattractive, a very different image to that portrayed by Brosnan".
The name of the Irish town was Ballymoran in Ireland. The place is situated in the parish of Lisnadill in Armagh County. The movie though did not film there it being shot in Greystones and Wicklow Town in Wicklow County.
The film's source 'Taffin' (1980) novel is actually the first of three 'Taffin' novels, all written by Lyndon Mallet. The others being 'Taffin's First Law' (1982) and 'Ask Taffin Nicely' (1984). Neither of the two sequels have ever been filmed.