F/X (1986)
A movies special effects man is hired by a government agency to help stage the assassination of a well known gangster. When the agency double cross him, he uses his special effects to trap the gangster and the corrupt agents. new york city, assassin, showdown, corruption, police, detective, fbi, mission of murder, witness protection, stuntman, mafia boss, deception, special effects, gunfight, disguise, federal agent, makeup artist, manhunt, justice department
ETC.
