I can’t remember the name of the film, but I’m positive that the actor who got hit with the dart went on to star as the murderer/antagonist in the TV series “The Fugitive.”
http://www.imdb.com/name/nm0707199/?ref_=tt_trv_trv ...Bill Raisch (1905–1984)
The one armed murderer (The Fugitive (TV)) was actor Bill Raisch with 20 acting credits in his career. Also, one armed man in "Spartacus'.
Do not discern any movie as one described above.
Heck, I was just trying to be clever.