The Last Ninja (TV movie 1983)

The Last Ninja
A story of an art dealer who, leads a double life as a martial arts warrior - Starring Michael Beck & Mako.
A successful art dealer is sought out by law enforcement after terrorists take some scientists hostage. Finding no possible solution, a law enforcement agent approaches the dealer (Beck). Mr. Cosmo, the agent believes the dealer to be linked to the ninja responsible for tracking down criminals and serving them justice. Mr. Cosmo hopes that the ninja's seemingly supernatural skills will remedy this impossible hostage situation.