John Neville John Neville was a British actor who appeared on , portraying Isaac Newton in the sixth season episode in . He was perhaps best known for playing the title role in ' s surreal comic fantasy " The Adventures of Baron Munchausen " ( for which Stratton Leopold was supervising producer ) and for his recurring role as " The Well - Manicured Man " on the FOX network ' s popular science fiction series , " The X - Files " . His first appearance on that series was in the episode " The Blessing Way " with Walter Gotell . Born in London , England , Neville attended the Chiswick County School for Boys and began training as an actor at the Royal Academy of Dramatic Art . As a member of London ' s Old Vic Company , Neville starred in numerous William Shakespeare plays , several of which made it to Broadway . He played the title role " King Richard II " , Romeo in " Romeo and Juliet " , and the title role of " Hamlet " , among many others . Neville ' s early films were British - made productions , including the 1960 biographical drama " Oscar Wilde " , the 1962 adventure " Billy Budd " , and a performance as Sherlock Holmes in the 1965 mystery " A Study in Terror " . He again portrayed Holmes in the Broadway play " Sherlock Holmes " in the 1970s , acting alongside fellow TNG guest star Clive Revill . He worked with Revill again in the 2002 drama films " Crime and Punishment " , which also starred Theodore Bikel , Richard Lynch , and Ron Perlman . In 1972 , Neville moved to Canada and focused his talents on theater . In 1978 , he co - starred with Canadian actors ( and fellow " Star Trek " performers ) Christopher Plummer and William Shatner in the Canadian Broadcasting Corporation ' s TV drama " Riel " . He continued working solely in theater throughout the remainder of the 1980s , with the exception of his star turn in " Baron Munchausen " . Since then , he has had supporting roles in such films as " The Road to Wellville " ( co - starring Roy Brocksmith and Colm Meaney ) , 1994 ' s " Little Women " ( starring Kirsten Dunst and Winona Ryder ) , " High School High " ( starring Louise Fletcher and co - starring Nicholas Worth ) , " The Fifth Element " ( with Sonita Henry and Tommy " Tiny " Lister , Jr . ) , " Urban Legend " ( with Brad Dourif ) , and the acclaimed 1999 drama " Sunshine " . In addition , Neville reprised his TV role of The Well - Manicured Man in the 1998 film " The X - Files " , directed by Rob Bowman and co - starring Michael Krawic , George Murdock , Terry O ' Quinn , Steve Rankin , and Michael Shamus Wiles . He also co - starred with TOS regular James Doohan in one of the latter ' s last films , 1999 ' s " The Duke " . More recent credits include ' s " Spider " in 2002 and ' s " The Statement " in 2003 . On television , in addition to his role on " The X - Files " , Neville starred with Mark Moses and Michael McKean on the short - lived NBC series " Grand " in 1990 . In 1992 , he worked alongside F . Murray Abraham , Jeffrey Nordling , Carel Struycken , and s Tim Russ in a made - for - TV adaptation of Jules Vernes ' " Journey to the Center of the Earth " . Neville also made guest appearances on such shows as " Road to Avonlea " , " E . N . G . " and " F / X : The Series " ( directed by Paul Lynch ) . During his time on " The X - Files " , Neville worked with fellow " Star Trek " performers Jerry Hardin , George Mardock , Brian Thompson , Fritz Weaver , and Michael Shamus Wiles . Rob Bowman directed Neville in two episodes of the series ; Kim Manners directed him in three . In 1998 , Neville had a recurring role on the Canadian drama series " Emily of New Moon " , on which Stephen McHattie was a regular . For his performance on this series , Neville was nominated for a Gemini Award in the category Best Performance by an Actor in a Continuing Leading Dramatic Role . Neville has more recently appeared on programs such as " Queer as Folk " , Canada ' s " The Eleventh Hour " , and the pilot episode for Manny Coto ' s science fiction series " Odyssey 5 " , starring Peter Weller and directed by David Carson . Neville died in Toronto , Canada , on 19 November 2011 . He was 86 . Other " Trek " connections . Additional projects , in addition to those referenced above , in which Neville has worked with other " Star Trek " alumni are as follows :