Overview
Sudden Death is a 1977 action film directed by Eddie Romero, starring Robert Conrad, and costarring Thayer David, Larry Manetti and Nancy Conrad, Robert Conrad's real life daughter.
Plot
When Ed Neilson's (Ken Metcalf) entire family is viciously murdered, he pleads with retired CIA operative Duke Smith (Robert Conrad) to investigate. Smith refuses, but relents after Neilson too meets an explosive death.
With the aid of a former associate Wyatt Spain (Felton Perry), Smith attempts to find out who was responsible for the death of Neilson and his family. Meanwhile, a government agent, named John Shaw (John Ashley), has one of his men (Larry Manetti) follow Smith as Shaw was working with members of Neilson's company to get him out due to his sympathy for some people who are fighting for rights who call themselves "The Brown Hats".
From Wikipedia (CC BY-SA 4.0).